WO2017107073A1 - 数据传输处理方法、用户设备和基站 - Google Patents

数据传输处理方法、用户设备和基站 Download PDF

Info

Publication number
WO2017107073A1
WO2017107073A1 PCT/CN2015/098332 CN2015098332W WO2017107073A1 WO 2017107073 A1 WO2017107073 A1 WO 2017107073A1 CN 2015098332 W CN2015098332 W CN 2015098332W WO 2017107073 A1 WO2017107073 A1 WO 2017107073A1
Authority
WO
WIPO (PCT)
Prior art keywords
rrc connection
user equipment
establishment
base station
information
Prior art date
Application number
PCT/CN2015/098332
Other languages
English (en)
French (fr)
Inventor
常俊仁
冯淑兰
夏金环
杨晓东
高永强
权威
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580085389.7A priority Critical patent/CN108370601A/zh
Priority to PCT/CN2015/098332 priority patent/WO2017107073A1/zh
Priority to EP15911072.5A priority patent/EP3383125A4/en
Publication of WO2017107073A1 publication Critical patent/WO2017107073A1/zh
Priority to US16/015,759 priority patent/US20180302944A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a data transmission processing method, a user equipment, and a base station.
  • the user equipment In the current Long Term Evolution (LTE) system, the user equipment (User Equipment, UE for short) is usually in idle mode when no service needs to be transmitted. When there is a service that needs to be transmitted, the UE needs to enter the connection mode from the idle mode and then perform the service transmission.
  • LTE Long Term Evolution
  • the network side device mainly includes a base station, such as an access network device such as an eUTRAN NodeB (eNB), and a core network such as a Mobility Management Entity (MME) and a Serving GateWay (SGW). device.
  • eNB eUTRAN NodeB
  • MME Mobility Management Entity
  • SGW Serving GateWay
  • the access layer context information (hereinafter referred to as context information) may be saved in the UE and the eNB. In particular, the UE-specific access layer parameters are saved.
  • the UE performs control of context information saving and data transmission recovery by introducing a new RRC connection suspension and RRC connection recovery procedure.
  • the control process simply includes: when the UE has no data to transmit in a certain period of time, the eNB performs a process of suspending the RRC connection of the UE, including message interaction between the eNB, the MME, and the SGW, to go
  • the context information of the UE is activated, and the radio bearer of the UE is released.
  • the eNB sends an RRC Connection Suspend message to the UE to notify the UE to save the relevant context information.
  • identifier information of the recovery context information may also be included.
  • the recovery process of the RRC connection is required.
  • the UE in addition to the random access procedure, the UE further sends the recovery identifier information carrying the previous network configuration, the Auth token of the UE, the bearer identifier (Bearer Ind), and the recovery reason (establ) to the eNB.
  • the RRC connection recovery request, the eNB feeds back to the UE an RRC connection recovery message carrying a Bearer description and a Bearer Ind to instruct the UE to resume an interaction process such as data transmission.
  • the implementation of the RRC connection recovery process is particularly necessary for the UE to redesign or re-add an additional interaction process based on the existing LTE related processing flow, which is incompatible with the existing LTE process, and the data transmission recovery is slow and implemented.
  • the complexity is greater.
  • the embodiment of the invention provides a data transmission processing method, a user equipment and a base station, which are used for quickly and easily recovering data transmission of the UE by using context information of the UE.
  • a first aspect of the present invention provides a data transmission processing method, which is performed by a user equipment served by a base station, and the method includes:
  • the determining, that the user equipment is in a state related to a trigger of a radio resource control RRC connection re-establishment or an RRC connection establishment includes:
  • the determining that the user equipment is in a state related to a radio resource control RRC connection re-establishment or an RRC connection establishment trigger includes:
  • the determining that the user equipment is related to a radio resource control RRC connection re-establishment or an RRC connection establishment trigger Status including:
  • the determining that the user equipment is in a state related to a radio resource control RRC connection re-establishment or an RRC connection establishment trigger includes:
  • a fifth possible implementation manner of the first aspect when the user equipment has uplink and/or downlink data to be transmitted And triggering an RRC connection re-establishment process or an RRC connection establishment process, including:
  • the RRC connection re-establishment request or the RRC connection establishment request is sent to the base station by using the current serving cell;
  • the cell sends an RRC connection re-establishment request or an RRC connection setup request to the base station.
  • the RRC connection is triggered when the user equipment has uplink and/or downlink data to be transmitted.
  • the establishment process or the RRC connection establishment process including:
  • the RRC connection is triggered when the user equipment has uplink and/or downlink data to be transmitted.
  • the establishment process or the RRC connection establishment process including:
  • the user equipment has an uplink and/or Before the downlink data to be transmitted or the RRC connection re-establishment process or the RRC connection establishment process is triggered, the method further includes:
  • the first timer is started, and after the first timer expires, the context information is released.
  • the first timer is started, and after the first timer expires, the context is released Information, including:
  • the context information is released.
  • the performing cell selection or Selection process including:
  • the second timer After suspending or stopping the second timer, if the first cell is no longer a suitable cell, reset and restart the second timer, in the i+1th to nth time segments, and The second cell is selected, where i takes an integer from 1 to n, and n is an integer greater than one.
  • the Send an RRC connection re-establishment request including:
  • the at least one of the message integrity authentication code short MAC-I and the reestablishment cause indication information is used to instruct the user equipment to resume data transmission by the saved context information.
  • the method further includes:
  • connection re-establishment message includes radio resource configuration information and security key information
  • the method further includes:
  • the method further includes :
  • the method further includes:
  • the cell selection or reselection is triggered, and an RRC connection establishment request is sent to the base station corresponding to the selected cell.
  • the RRC connection establishment process is triggered, including:
  • the uplink transmission timing is adjusted according to the uplink timing advance information, and/or the RRC connection establishment request is sent to the base station by using the uplink transmission resource, where the RRC connection establishment request includes the identifier information of the user equipment.
  • the method further includes:
  • RRC connection setup message sent by the base station, where the RRC connection setup message includes recovery indication information, where the recovery indication information is used to instruct the user equipment to resume data transmission by using the saved context information;
  • the sending, by the base station, an RRC connection setup complete message includes:
  • RRC connection setup complete message includes a short MAC-I calculated according to the identifier information of the user equipment
  • the sending, by the base station, an RRC connection establishment request includes:
  • the obtaining the security key includes:
  • the security key includes a message integrity protection key K RRCinc , a message encryption key K RRCenc , and a data encryption key K UPenc ;
  • the obtaining a security key includes:
  • the security key indication information is carried in any one of the following messages: a key update indication message, a data transmission indication message, an RRC connection setup message, and a message carrying the UE context save indication information.
  • the acquiring the uplink timing advance information and/or the uplink Transmission resources including:
  • the base station Receiving a random access response message sent by the base station, where the random access response message includes the uplink timing advance information and uplink resource allocation information used to acquire the uplink transmission resource.
  • the method further includes:
  • the uplink transmission resource is obtained by any one of the following methods:
  • the method further includes:
  • the context information saves the request to cause the base station to save the context information.
  • the context information saving indication information The base station sends the request according to the context information saving request, or the base station determines that the data transmission is not performed with the user equipment in the second preset time according to the data transmission record with the user equipment.
  • the second preset time is equal to or not equal to the first preset time.
  • the method further includes:
  • the fourth timer is started when the context information saving indication information is received.
  • the context information saving indication information Included in any of the following instructions:
  • the context information save indication message the RRC connection suspension indication message, and the RRC connection release indication message.
  • the method further includes:
  • Performing a cell selection or reselection process if the selected base station is different from the base station that sends the context information saving indication information, or if the selected number of cell changes is greater than or equal to a preset number of times, then the user is When the device has the data to be transmitted, it is determined that the initial RRC connection establishment process is triggered.
  • the method further includes:
  • the location update process is triggered, and the data radio bearer is established with the new base station during the location update process.
  • the method further includes:
  • a second aspect of the present invention provides a data transmission processing method, which is performed by a base station serving a user equipment, and the method includes:
  • the user equipment When the user equipment does not perform data transmission within a preset time, the user equipment sends the context information saving indication information, so that the user equipment saves the context information, and determines that the user equipment is re-established with the RRC connection. Or a trigger-related state established by the RRC connection, and triggering an RRC connection re-establishment procedure or an RRC connection establishment procedure when there is uplink and/or downlink to-be-transmitted data.
  • the method further includes:
  • timer configuration information includes a timer configuration indicating a validity period of the security key in the context information.
  • Information, and timer configuration information indicating an expiration date of the context information are included in the context information.
  • the method further includes:
  • RRC connection setup request includes the identifier information of the user equipment, and the identifier information of the user equipment includes an S-TMSI;
  • RRC connection setup message And transmitting an RRC connection setup message to the user equipment, where the RRC connection setup message includes recovery indication information, the recovery indication, when the context information is determined to be valid according to the S-TMSI sent by the mobility management entity MME.
  • the information is used to instruct the user equipment to recover the data transmission by using the saved context information.
  • a third aspect of the present invention provides a user equipment, including:
  • the receiving and saving module is configured to receive the context information saving indication information sent by the base station, and save the context information of the user equipment according to the context information saving indication information;
  • a determining module configured to determine that the user equipment is in a state related to a trigger of a radio resource control RRC connection re-establishment or an RRC connection establishment;
  • a re-establishment processing module configured to trigger an RRC connection re-establishment process or an RRC connection establishment process when the user equipment has uplink and/or downlink to-be-transmitted data, to pass the saved context information and re-establish or establish an RRC The connection transmits the data to be transmitted.
  • the determining module includes:
  • the first determining submodule is configured to determine that the user equipment is in a radio link failure RLF state.
  • the determining module includes:
  • a second determining submodule configured to determine that the user equipment is in a synchronization state with the base station
  • a third determining submodule configured to determine that the user equipment is in an RLF state when the user equipment has the data to be transmitted.
  • the determining module includes:
  • a fourth determining submodule configured to determine that the user equipment is in an RRC connection re-establishment initialization state, and perform a cell selection or reselection process according to the RRC connection re-establishment initialization state.
  • the determining module includes:
  • a fifth determining submodule configured to determine that the user equipment is in an RRC connection setup initialization state, and perform a cell selection or reselection procedure according to the RRC connection setup initialization state, or determine that the user equipment is in a cell selection or reselection process.
  • the reconstruction processing module includes :
  • a determining sub-module configured to determine whether the current serving cell of the user equipment meets a preset communication requirement
  • a sending submodule configured to send an RRC connection re-establishment request or an RRC connection establishment request to the base station if the current serving cell meets a preset communication requirement
  • the sending sub-module is further configured to: when the cell is selected and the base station corresponding to the cell is the base station, send an RRC connection re-establishment request or an RRC connection establishment request to the base station.
  • the sending submodule is further configured to:
  • the sending submodule is further configured to:
  • the re-processing processing module further includes:
  • the timing control submodule is configured to start the first timer, and release the context information after the first timer expires.
  • the selecting submodule is configured to perform a cell selection or reselection process in a time period corresponding to the first timer, and select one cell;
  • the timing control submodule is configured to release the context information if a cell that is not selected within a time period corresponding to the first timer is used.
  • the reconstruction processing module includes:
  • a first acquiring submodule configured to acquire uplink timing advance information and/or an uplink transmission resource
  • the sending sub-module is configured to adjust an uplink sending timing according to the uplink timing advance information, and/or send an RRC connection re-establishment request to the base station by using the uplink transmission resource, where the RRC connection re-establishment request includes At least one of the identification information of the user equipment, the short message integrity authentication code, the short MAC-I, and the reestablishment reason indication information, where the re-establishment reason indication information is used to indicate that the user equipment recovers data by using the saved context information. transmission.
  • the re-processing processing module further includes:
  • a receiving submodule configured to receive an RRC connection re-establishment message sent by the base station, where the connection re-establishment message includes radio resource configuration information and security key information;
  • the configuration submodule is configured to perform corresponding resource configuration according to the radio resource configuration information, and determine to recover the data radio bearer DRB.
  • the sending submodule is further configured to send, according to the security key information, the base station
  • the encrypted RRC connection re-establishment completion message includes the to-be-transmitted data in the RRC connection re-establishment completion message.
  • the sending sub-module is further configured to send, to the base station, an RRC connection re-establishment complete message encrypted according to the security key information, where the RRC connection re-establishment complete message includes the to-be-transmitted data.
  • the timing control sub-module is further configured to:
  • the timing control submodule is further configured to:
  • the receiving submodule receives the RRC connection reestablishment message within a time period corresponding to the third timer, stopping timing of the third timer;
  • the receiving submodule does not receive the RRC connection reestablishment message within a time period corresponding to the third timer, perform one or more of the following operations:
  • the cell selection or reselection is triggered, and an RRC connection establishment request is sent to the base station corresponding to the selected cell.
  • the re-processing processing module includes:
  • a second acquiring submodule configured to acquire uplink timing advance information and/or an uplink transmission resource
  • the sending submodule is further configured to: adjust an uplink sending timing according to the uplink timing advance information, and/or send an RRC connection setup request to the base station by using the uplink transmission resource, where the RRC connection setup request includes the Identification information of the user equipment.
  • the receiving submodule is further configured to:
  • RRC connection setup message sent by the base station, where the RRC connection setup message includes recovery indication information, where the recovery indication information is used to instruct the user equipment to resume data transmission by using the saved context information;
  • the sending submodule is further configured to: send an RRC connection setup complete message to the base station.
  • the sending submodule is further configured to send an RRC connection setup complete message to the base station, where
  • the RRC connection establishment complete message includes a short MAC-I calculated according to the identification information of the user equipment;
  • the reconstruction processing module further includes:
  • a third obtaining submodule configured to obtain a security key
  • the sending submodule is further configured to send the RRC connection setup complete message encryption and/or integrity protection according to the security key.
  • the sending submodule is further configured to establish the RRC connection according to the security key Send after requesting encryption and/or integrity protection.
  • the third obtaining submodule is specifically configured to:
  • the security key includes a message integrity protection key K RRCinc , a message encryption key K RRCenc , and a data encryption key K UPenc ;
  • the receiving submodule is further configured to receive security key indication information sent by the base station, where the security key indication information includes security key update information;
  • the reconstruction processing module further includes:
  • An update submodule configured to update the intermediate key KeNB according to the security key update information
  • a calculation submodule configured to generate a message integrity protection key K RRCinc according to the updated intermediate key KeNB and an integrity protection algorithm, generate a message encryption key K RRCenc and data encryption according to the updated intermediate key KeNB and an encryption algorithm Key K UPenc ;
  • the security key indication information is carried in any one of the following messages: a key update indication message, a data transmission indication message, an RRC connection setup message, and a message carrying the UE context save indication information.
  • the first obtaining submodule or the second obtaining submodule includes:
  • a determining unit configured to determine whether the current coverage level has changed
  • a first obtaining unit configured to: when the coverage level changes:
  • the base station Receiving a random access response message sent by the base station, where the random access response message includes the uplink timing advance information and an uplink resource allocation for acquiring the uplink transmission resource information.
  • the first obtaining submodule or the second obtaining submodule further includes:
  • a second obtaining unit configured to: when the coverage level does not change:
  • the uplink transmission resource is obtained by any one of the following methods:
  • the method further includes:
  • a sending module configured to send a context information saving request to the base station when the data that is not required to be transmitted is determined in the first preset time, so that the base station saves the context information.
  • the context information saving indication The information is sent by the base station according to the context information saving request, or the base station does not perform data with the user equipment in the second preset time according to the data transmission record with the user equipment.
  • the second preset time sent during transmission is equal to or not equal to the first preset time.
  • the receiving module is further And configured to receive fourth timer configuration information sent by the base station, and start the fourth timer when receiving the context information saving indication information; the fourth timer is used to time security in the context information. The validity period of the key.
  • the context information saving indication is included in any of the following instructions:
  • Context information save indication message RRC connection suspension indication message, RRC connection release Indicate the message.
  • the selecting sub-module further Used for:
  • Performing a cell selection or reselection process if the selected base station is different from the base station that sends the context information saving indication information, or if the selected number of cell changes is greater than or equal to a preset number of times, then the user is When the device has the data to be transmitted, it is determined that the initial RRC connection establishment process is triggered.
  • the selecting sub-module further Used for:
  • the location update process is triggered, and the data radio bearer is established with the new base station in the location update process.
  • the receiving and saving module is further configured to:
  • a fourth aspect of the present invention provides a base station, including:
  • a determining module configured to determine whether the user equipment does not perform data transmission within a preset time
  • a sending module configured to: when the determining module determines that the user equipment does not perform data transmission within a preset time, send the context information saving indication information to the user equipment, so that the user equipment saves the context information, and determines The user equipment is in a state related to a trigger for establishing an RRC connection re-establishment or an RRC connection, and triggers an RRC connection re-establishment procedure or an RRC connection setup procedure when there is uplink and/or downlink to-be-transmitted data.
  • the sending module is further configured to:
  • the determining module determines that the user equipment does not perform data transmission within a preset time, sending timer configuration information to the user equipment, where the timer configuration information includes indicating the upper and lower The timer configuration information of the validity period of the security key in the text information, and the timer configuration information indicating the validity period of the context information.
  • the method further includes:
  • a receiving module configured to receive an RRC connection setup request sent by the user equipment, where the RRC connection setup request includes the identifier information of the user equipment, and the identifier information of the user equipment includes an S-TMSI;
  • the sending module is further configured to: when the determining module determines that the context information is valid according to the S-TMSI previously sent by the mobility management entity MME, send an RRC connection setup message to the user equipment, where the RRC connection is The setup message includes recovery indication information, and the recovery indication information is used to instruct the user equipment to resume data transmission by using the saved context information.
  • the data transmission processing method, the user equipment, and the base station provided by the present invention after receiving the context information saving indication message sent by the base station, the user equipment is forcibly determined to be related to the trigger of the RRC connection re-establishment or the RRC connection establishment.
  • a state such as an RLF state, triggers an RRC connection re-establishment procedure or an RRC connection setup procedure based on the trigger-related state when data needs to be transmitted, to quickly recover by reusing the RRC connection re-establishment procedure or the RRC connection establishment procedure.
  • Data transmission and because it is a reuse of the RRC connection re-establishment process or the RRC connection establishment process in the LTE standard, the user equipment does not need to make complicated changes, and the implementation is simple.
  • FIG. 1 is a flowchart of Embodiment 1 of a data transmission processing method according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a cell selection or reselection process according to an embodiment of the present invention
  • FIG. 3 is a flowchart of an RRC connection re-establishment process except for a cell selection or reselection process according to an embodiment of the present invention
  • step 301 is a flow chart of a specific implementation of step 301;
  • FIG. 5 is a flowchart of an implementation manner of an RRC connection establishment process except for a cell selection or reselection process according to an embodiment of the present invention
  • FIG. 6 is a signaling interaction diagram of Embodiment 2 of a data transmission processing method according to an embodiment of the present disclosure
  • FIG. 7 is a signaling interaction diagram of Embodiment 3 of a data transmission processing method according to an embodiment of the present disclosure.
  • FIG. 8 is a signaling interaction diagram of Embodiment 4 of a data transmission processing method according to an embodiment of the present disclosure
  • FIG. 9 is a signaling interaction diagram of Embodiment 5 of a data transmission processing method according to an embodiment of the present disclosure.
  • FIG. 10 is a flowchart of Embodiment 6 of a data transmission processing method according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of a user equipment according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of a user equipment according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of Embodiment 3 of a user equipment according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of Embodiment 4 of a user equipment according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of Embodiment 5 of a user equipment according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of Embodiment 1 of a base station according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of Embodiment 2 of a base station according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of Embodiment 1 of a data transmission processing method according to an embodiment of the present invention.
  • the solution of the present invention may be applied to an LTE network, where the primary interaction network element includes a UE, an eNB, and a core network device, such as an MME. SGW.
  • the UE may be the UE in the current LTE system or the UE in the Narrow Band Internet Of Things (NB-IoT).
  • NB-IoT Narrow Band Internet Of Things
  • NB-IoT project is being established at 3GPP.
  • the goal of the project is to further expand the LTE system to support a large number of low-throughput IoT devices or a large number of IoT devices that are not sensitive to latency requirements.
  • ultra-low complexity and ultra-low power are two key requirements.
  • the data transmission processing method specifically includes the following steps:
  • Step 101 The UE receives the context information saving indication information sent by the eNB, and saves the context information of the UE according to the context information saving indication information.
  • Step 102 The UE determines that the UE is in a state related to an RRC connection re-establishment or an RRC connection establishment trigger.
  • Step 103 When there is uplink and/or downlink data to be transmitted, the UE triggers an RRC connection re-establishment process or an RRC connection establishment process to transmit the to-be-transmitted data through the saved context information and the re-established or established RRC connection.
  • the sending of the context information saving indication information is performed by the eNB to the UE when it determines that the UE does not transmit data within a certain period of time.
  • the eNB may determine that the UE does not transmit data within a certain period of time by using an optional manner as follows:
  • the first mode in the process of data transmission with the network, if after completing a current data transmission, there is no data to be transmitted later, that is, data that does not need to be transmitted within a preset time.
  • the eNB sends a context information save request to the eNB to save the context information of the UE, that is, request the eNB to save the context information of the UE.
  • the context information saving indication information is sent by the eNB according to the context information saving request, that is, when the eNB receives the context information saving request, it determines that the UE does not need to continue to transmit data within the time, and may And sending the foregoing context saving indication message, where the saving indication information is carried in the context saving indication message.
  • the preservation of the UE context information means that the eNB performs the preservation of the context information on the UE side and the network side.
  • the foregoing context information saving request may also be referred to as an RRC connection suspension request message, etc.
  • the context information saving indication message may also be referred to as an RRC connection suspension indication message, an RRC connection release indication message, etc., without specific limit.
  • the second mode the context information saving indication information is sent by the eNB according to the data transmission record with the UE, when it is determined that the data transmission is not performed with the UE within a preset time.
  • the eNB may also determine that the UE may save the context information of the UE (or equivalent) when determining that the UE has no data to continue transmission according to the data transmission with the UE. It is called hang or release of the RRC connection, so as to send the above context information saving indication information to the UE.
  • the eNB does not immediately send the foregoing context saving indication information to the UE, but needs to interact with the core network device: MME and SGW to complete related processing on the network side, for example, The pending processing of the bearer of the UE is sent to the UE after the relevant processing is completed.
  • MME and SGW the core network device
  • the UE after receiving the context saving indication information sent by the eNB, the UE performs the saving context information.
  • the context information may include one or more of radio resource configuration information, security algorithms, UE identifiers, or UE identification information, measurement configuration information, and the like of the UE.
  • the radio resource configuration information may include one or more of physical layer configuration information, MAC layer configuration information, RLC layer configuration information, and PDCP layer configuration information.
  • the implementation complexity of the UE is reduced. After the context information is saved, the UE then forcibly determines itself to be in the RRC connection re-establishment or RRC. The trigger-related state of the connection establishment.
  • the UE determines that the UE is in a state related to the triggering of the RRC connection re-establishment or the RRC connection establishment, and may include the following optional implementation manners:
  • the UE determines that the context information of the UE needs to be saved, or when it is determined that it needs to be in the RRC suspended state, that is, when receiving the context saving indication information sent by the eNB, the UE determines that it is currently in the RLF state (or may also be called For extended RLF status, or virtual RLF status).
  • the reason for the extended or virtual RLF state is to distinguish it from the triggering cause of the existing RLF state.
  • the UE is not in the RLF state at this time, but is forced to be in the RLF state.
  • the present embodiment when the UE determines that it is in the RLF state, but does not trigger the RRC connection re-establishment process, the present embodiment does not immediately trigger the RRC connection re-establishment process.
  • the UE triggers the RRC connection re-establishment process when transmitting the uplink and/or downlink data to be transmitted.
  • the state does not immediately trigger the RRC connection reestablishment, but delays the RRC connection reestablishment until the UE has data to transmit, so that the data can be quickly recovered through the RRC connection re-establishment process in the existing LTE when there is data to be transmitted. transmission.
  • Manner 2 It is determined that the UE is in a timing synchronization state with the eNB, and when the UE has data to be transmitted, it is determined that the UE is in an RLF state.
  • the UE may also determine that the UE is in the timing synchronization state, that is, in the timing synchronization state with the eNB.
  • the UE may start a timer, and the UE may be determined to be in a timing synchronization state within a time period corresponding to the timer. If the UE has data to be transmitted that needs to be transmitted, the UE then determines that it is in the RLF state, and then triggers the RRC connection re-establishment process.
  • the UE needs to detect whether timing synchronization is with the eNB. If the timing synchronization is lost, the RRC connection re-establishment process is triggered.
  • the UE By forcing the UE to determine that the timing synchronization is maintained with the eNB, when there is data to be transmitted, the UE is forcibly determined to be in the RLF state, and the RRC connection re-establishment process is triggered, so that when the UE has data to be transmitted, The RLF event is triggered, and the data transmission recovery can be quickly achieved by reusing the existing RRC connection re-establishment process.
  • Manner 3 determining that the UE is in an RRC connection re-establishment initialization state, and performing a cell selection or reselection procedure according to the RRC connection re-establishment initialization state.
  • the UE determines that the UE is in the RRC connection re-establishment initialization state when determining that the context information of the UE needs to be saved or when the RRC suspension state is determined, that is, the UE determines that the RRC connection re-establishment process needs to be triggered at this time, but only What needs to be performed immediately is the cell selection or reselection process, that is, the initialization phase of performing the RRC connection re-establishment process.
  • the UE first determines to enter an RLF state (or may also be referred to as an extended RLF state, or a virtual RLF state), and then determines to initiate initialization of the RRC connection re-establishment process. stage.
  • the UE triggers the RRC connection re-establishment process after saving the context information, but only performs the cell selection or reselection process first, and the other RRC connection re-establishment process is not performed, but the UE needs to transmit data.
  • the subsequent RRC connection re-establishment process is triggered, such as random access, sending an RRC connection re-establishment request to the eNB, and the like.
  • the RRC connection re-establishment process is triggered, which mainly refers to the cell passing through The cell selected by the selection or reselection procedure sends an RRC Connection Reestablishment Request to the eNB.
  • the RRC connection re-establishment process is divided into an initialization process, that is, a cell selection or reselection process, and other RRC connection re-establishment processes other than the cell selection or reselection process.
  • an initialization process that is, a cell selection or reselection process
  • other RRC connection re-establishment processes other than the cell selection or reselection process.
  • Manner 4 determining that the UE is in an RRC connection setup initialization state, and performing a cell selection or reselection procedure according to the RRC connection setup initialization state, or determining that the UE is in a cell selection or reselection process.
  • the UE determines that the UE is in the RRC connection setup initialization state when determining that the context information of the UE needs to be saved or when the RRC suspension state is determined, that is, the UE determines that the RRC connection establishment process needs to be triggered at this time, but only needs to be immediately
  • the cell selection or reselection process is performed.
  • the UE triggers the RRC connection setup process after saving the context information, but only performs the cell selection or reselection process first, and the other RRC connection establishment process is not performed, but the UE needs to transmit data to be performed.
  • the subsequent RRC connection setup process is triggered, such as random access, sending an RRC connection setup request to the eNB, and the like.
  • the RRC connection setup process is triggered, which mainly refers to the cell selected by the cell selection or reselection process to send an RRC connection setup request to the eNB.
  • the saved context information can be released.
  • the RRC connection establishment process is divided into an initialization process, that is, a cell selection or reselection process, and other RRC connection establishment processes other than the cell selection or reselection process.
  • initialization process that is, a cell selection or reselection process
  • other RRC connection establishment processes other than the cell selection or reselection process.
  • the UE determines that it is in the trigger state of any one of the foregoing alternative manners related to the RRC connection re-establishment or the RRC connection establishment trigger, when the UE needs to transmit data to be transmitted, the corresponding processing is triggered. process.
  • connection establishment process that is, the complete RRC connection re-establishment process or the RRC connection establishment process; for mode 3, in the case of determining that the UE is in the RRC connection re-establishment initialization state, after performing the cell selection or re-selection process,
  • another RRC connection re-establishment process is performed, That is, the RRC connection re-establishment process except the cell selection or reselection process is triggered, specifically, the RRC connection re-establishment request is sent to the eNB.
  • the UE may determine whether there are uplink and downlink data to be transmitted in the following optional manner:
  • the UE determines that there is uplink data arrival or the UE has uplink data to be sent according to the indication of the application layer, it is determined that there is uplink data to be transmitted;
  • the UE When receiving the data transmission notification message sent by the eNB, the UE determines that there is downlink data to be received, so as to determine that there is downlink data to be transmitted.
  • the data transmission notification message may be, for example, a paging message.
  • the UE determines that it is in the RLF state, and delays the data to be transmitted, triggers the RRC connection re-establishment process, by reusing the RRC connection re-establishment process. Quickly recover data transfers.
  • the UE determines that it is in the timing synchronization state with the eNB, and delays the data to be transmitted, determines that it is in the RLF state, and then triggers the RRC connection re-establishment process to Quickly recover data transfers by reusing the RRC connection re-establishment process.
  • the UE determines that it is in the RRC connection re-establishment initialization state, and then triggers the cell selection or re-selection process.
  • the subsequent RRC connection is triggered.
  • the re-establishment process to quickly recover data transfers by reusing the RRC connection re-establishment process.
  • the UE determines that it is in the RRC connection setup initialization state, and then triggers the cell selection or reselection process.
  • the subsequent RRC connection establishment is triggered. Process to quickly recover data transfers by modifying the RRC connection setup process.
  • mode 1 and mode 2 when the user equipment has uplink and/or downlink data to be transmitted or before the UE has data to be transmitted, that is, to the eNB.
  • a preset communication requirement such as whether the signal quality, the received signal strength, and the like satisfy a preset threshold. If the current serving cell meets the preset communication requirement, the UE directly sends an RRC connection re-establishment request or an RRC connection setup request to the eNB, and ignores, that is, does not perform the cell selection or re-selection process.
  • the UE performs a cell selection or reselection process.
  • the eNB that selects the cell and the cell corresponding to the cell is the eNB that sends the context information to save the indication information
  • the RRC connection is sent to the eNB.
  • a request for an RRC connection setup request is established.
  • mode 1 and mode 2 it is emphasized that the UE is forced to be in the RLF state regardless of whether the current UE actual signal quality satisfies the communication requirement or whether the current UE truly satisfies the condition of RLF from the perspective of signal quality.
  • the UE after the eNB determines that the UE does not transmit data within a certain period of time, the UE sends the context information saving indication information to the UE, and after receiving the context information saving indication information, the UE is determined to be re-established with the RRC connection.
  • a trigger-related state established by the RRC connection such as an RLF state, etc.
  • the RRC connection re-establishment process or the RRC connection establishment process is triggered based on the trigger-related state to reuse the RRC connection re-establishment process or
  • the RRC connection establishment process is used to quickly recover the data transmission, and since it is a reuse of the existing RRC connection re-establishment process and the RRC connection establishment process in the LTE standard, the UE does not need to perform complicated changes, and the implementation is simple.
  • the foregoing embodiment has already mentioned that for the RRC connection re-establishment procedure or the RRC connection setup procedure, it may be divided into two sub-processes: an initialization phase, that is, a cell selection or reselection procedure, and other RRC connection re-establishment procedures or an RRC connection setup procedure.
  • an initialization phase that is, a cell selection or reselection procedure
  • other RRC connection re-establishment procedures or an RRC connection setup procedure will be described with reference to the embodiment shown in FIG. 2.
  • the cell selection or reselection procedure is applicable to the above modes 1, 2, 3, and 4.
  • FIG. 2 is a flowchart of a cell selection or reselection process according to an embodiment of the present invention. As shown in FIG. 2, a specific implementation of a cell selection or reselection process includes the following steps:
  • Step 201 The UE starts a first timer, and performs a cell selection or reselection process in a time period corresponding to the first timer to select a cell.
  • Step 202 If the UE does not select the cell or the first time in the time period corresponding to the first timer When a timer expires, the context information is released.
  • the first timer is used to control the length of time for storing the context information of the UE
  • the length of the first timer T0 may be a preset value, or the eNB may be the UE.
  • the eNB may also notify the UE of the length of the first timer T0, in addition to the foregoing save indication information.
  • the length of the specific first timer T0 may be a finite value, or may be infinitely long.
  • the UE performs the cell selection or reselection process, and may also be performed under the control of the first timer T0. If the UE always selects less than one cell within the time period corresponding to the first timer T0, the UE determines Release the context information and enter the RRC idle state.
  • the UE performs a cell selection or reselection process in a time period corresponding to the first timer, and selects a cell, which can be implemented as follows:
  • the UE starts a second timer, and if the first cell is selected, the second timer is suspended or stopped in the ith time period corresponding to the second timer;
  • Suitable cells in the various embodiments of the present invention refer to the signal quality of the UE data transmission that the cell can be, and the signal path loss or signal transmission rate meets the service quality requirements.
  • i is an integer from 1 to n
  • n is an integer greater than 1
  • the time period corresponding to the first timer is greater than the time period corresponding to the second timer.
  • the UE may specifically perform the following cell selection or reselection policy:
  • the UE can initiate a second timer T1.
  • the second timer T1 can control the UE to perform cell selection or reselection related operations.
  • the UE can then perform cell selection or reselection according to the criteria for cell selection or reselection. For example, it can be performed specifically based on the 36.304 protocol of LTE.
  • the UE suspends or stops the second timer T1.
  • the UE resets and restarts the second timer T1, and then performs cell selection or reselection again to select other cells, and so on.
  • the first timer T0 is reached Until the length or when the data to be transmitted arrives.
  • the foregoing cell selection or reselection process is applicable to mode 1, mode 2, mode 3, and mode 4, except that the execution timing and the number of executions of the process are different. Specifically, for mode 1 and mode 2, since the cell selection or reselection process and the corresponding subsequent RRC connection re-establishment process are continuously performed, it is not necessary to repeatedly perform cell selection of multiple second timers T1. Or re-election process, the selected cell can be. For the mode 3 and the mode 4, the cell selection or reselection process is performed separately from the subsequent corresponding RRC connection re-establishment process or the RRC connection establishment process. Therefore, it is generally required to repeatedly perform multiple T1 corresponding selection processes until When the data to be transmitted arrives.
  • the timer configuration information may be further sent, where the timer configuration information may include the configuration information of the first timer T0 and the second timer T1.
  • the configuration information may also include configuration information of the security key timer, that is, the fourth timer T3.
  • the fourth timer is used to time the validity period of the security key in the context information.
  • the timer configuration information may further include configuration information such as the third timer T2 described below.
  • a plurality of different cells are corresponding to one base station.
  • the cell selection or reselection process if the eNB corresponding to the selected cell is different from the eNB that sends the context information saving indication information, or When the number of times the cell is changed is greater than or equal to the preset number of times, when the UE has data to be transmitted, the UE determines to trigger the initial RRC connection establishment process, that is, re-processes according to the existing RRC connection establishment process.
  • the location update process is triggered, and the data radio bearer is established with the new base station in the location update process.
  • the UE may select a new cell, and the cell and the previous cell do not belong to the same TA (Track Area), that is, the tracking domain, and the UE will be triggered to execute the location at this time.
  • Update In the traditional location update, the UE does not need to establish a data radio bearer, that is, only the signaling radio bearer is established. In this embodiment, the UE is required to establish a data radio bearer with the eNB when the location is updated.
  • connection re-establishment process is described. This process is basically the same for the above modes 1, 2, and 3, but there is a slight difference with respect to the mode 3, which will be described in detail later.
  • FIG. 3 is a flowchart of an RRC connection re-establishment process except for a cell selection or reselection process according to an embodiment of the present invention. As shown in FIG. 3, subsequent RRC connection re-establishment processes except cell selection or re-selection process Can include the following steps:
  • Step 301 The UE acquires uplink timing advance information and uplink transmission resources.
  • the UE acquires uplink timing advance information and/or uplink transmission resources.
  • Step 302 The UE adjusts the uplink sending timing according to the uplink timing advance information, and sends an RRC connection re-establishment request to the eNB by using the uplink transmission resource, where the RRC connection re-establishment request includes the identifier information of the UE and the short message integrity authentication code short MAC. At least one of -I (see 3GPP standard for details) and reconstruction cause indication information.
  • the reconstruction cause indication information is used to instruct the UE to resume data transmission by the saved context information.
  • the UE adjusts an uplink sending timing according to the uplink timing advance information, and/or sends an RRC connection re-establishment request to the eNB by using an uplink transmission resource.
  • Step 303 The UE receives an RRC connection re-establishment message sent by the eNB, where the connection re-establishment message includes radio resource configuration information and security key information.
  • Step 304 The UE performs corresponding resource configuration according to the radio resource configuration information, and determines to recover the data radio bearer.
  • the traditional RRC connection re-establishment process only recovers the Signaling Radio Bearer (SRB).
  • SRB Signaling Radio Bearer
  • DRB Data Radio Bearer
  • Step 305 The UE sends an RRC connection re-establishment complete message encrypted according to the security key information to the eNB, where the RRC connection re-establishment complete message includes data to be transmitted.
  • the UE may obtain the uplink timing advance information and the uplink transmission resource in the following two alternative manners.
  • step 301 includes the following steps:
  • Step 401 The UE determines whether the current coverage level changes. When the coverage level changes, step 402-403 is performed. When the coverage level does not change, step 404 is performed. And any of steps 405-407.
  • Step 402 The UE sends a random access request to the eNB.
  • Step 403 The UE receives the random access response message sent by the eNB, where the random access response message includes the uplink timing advance information and the uplink resource allocation information used to acquire the uplink transmission resource.
  • the UE may determine whether the coverage level of the UE changes according to a Radio Resource Management (RRM) measurement. That is, when the amount of change of the RRM measurement result does not exceed a preset threshold, the UE determines that its coverage level has not changed, otherwise if the threshold is exceeded, it determines that the coverage level of the UE changes.
  • RRM Radio Resource Management
  • the UE When determining that the coverage level of the UE is changed, the UE sends a random access request (preamble) to the eNB, and the eNB feeds back a random access response message to the UE, where the random access response message includes uplink timing advance information and uplink resource allocation information. Therefore, the UE acquires the corresponding uplink transmission resource according to the uplink resource allocation information.
  • Step 404 The UE acquires the currently locally saved uplink timing advance information as the uplink timing advance information.
  • the UE uses the currently saved uplink timing advance information for adjusting the uplink transmission timing when the RRC connection re-establishment request message needs to be sent.
  • the acquisition of the uplink transmission resource may be obtained in the manner described in any of the following three steps.
  • Step 405 The UE sends a scheduling request resource to the eNB to obtain an uplink transmission resource.
  • the UE may first send the SR resource to the eNB to obtain the uplink transmission resource by using the configuration of the saved scheduling request (SSR) resource.
  • the UE then sends an RRC connection re-establishment request according to the acquired uplink transmission resource.
  • SSR saved scheduling request
  • Step 406 The UE acquires uplink transmission resources by competing for uplink shared channel resources.
  • the UE sends an RRC connection re-establishment request to the eNB by competing for the uplink shared channel resource.
  • Step 407 The UE acquires a resource configured by the eNB for the UE in advance as an uplink transmission resource.
  • the UE sends an RRC connection re-establishment request through the resources pre-configured by the eNB.
  • the pre- The configured resource may be that the eNB notifies the UE together when notifying the UE to save the context information.
  • the UE After the UE obtains the uplink timing advance information and the uplink transmission resource according to the foregoing two different situations, the UE adjusts the uplink transmission timing according to the uplink timing advance information, and sends an RRC connection re-establishment request to the eNB by using the uplink transmission resource.
  • the RRC connection re-establishment request carries the identification information of the UE, such as a Cell Radio Network Temporary Identifier (C-RNTI) or a Temporary Mobile Subscriber Identity (S-Temporary Mobile Subscriber Identity, S-TMSI for short). ).
  • C-RNTI Cell Radio Network Temporary Identifier
  • S-Temporary Mobile Subscriber Identity S-Temporary Mobile Subscriber Identity
  • MAC-I Message Authentication Code for Integrity
  • the short MAC-I is based on the identifier information of the UE, the cell identifier of the current cell of the UE, and the cell serving the UE before re-establishment (the cell serving the UE before re-establishment may be the same as the current cell of the UE)
  • the physical layer cell identifier of the cell is produced as an input parameter.
  • the short MAC-I can be generated using C-RNTI or S-TMSI. And, when the C-RNTI is used, it is the C-RNTI allocated by the serving base station currently saved by the UE.
  • the eNB When the short MAC-I is generated by using the C-RNTI, but the S-TMSI is included in the RRC connection re-establishment request, the eNB needs to derive the C-RNTI corresponding to the UE according to the S-TMSI reported by the UE, and then derives the use.
  • the C-RNTI is used to verify the short MAC-I generated by the UE and the short MAC-I reported by the UE. To this end, after notifying the UE to save the context information, the eNB needs to save the S-TMSI of the UE.
  • the RRC connection re-establishment request further carries the indication information indicating the connection recovery or the data transmission recovery, that is, the foregoing re-establishment reason indication information, to notify the eNB of the reason for the RRC connection re-establishment.
  • the eNB After receiving the RRC connection re-establishment request sent by the UE, the eNB allocates radio resource configuration information and security key information (for example, nextHopChainingCount) to the UE, and carries the allocated information in the RRC connection re-establishment message to the UE.
  • radio resource configuration information and security key information for example, nextHopChainingCount
  • the UE receives the RRC connection re-establishment message sent by the eNB, performs corresponding resource configuration according to the radio resource configuration information, recovers the DRB, and sends the eNB to the eNB according to the security key information.
  • the RRC connection re-establishment completion message is not limited to the RRC connection re-establishment message sent by the eNB, performs corresponding resource configuration according to the radio resource configuration information, recovers the DRB, and sends the eNB to the eNB according to the security key information.
  • the UE updates the intermediate key KeNB according to the security key information in the RRC connection re-establishment message, and further generates a message integrity protection key K RRCinc based on the new intermediate key KeNB and the integrity protection algorithm, according to the updated
  • the intermediate key KeNB and the encryption algorithm generate a message encryption key K RRCenc and a data encryption key K UPenc .
  • the above key is immediately activated for subsequent use.
  • the UE sends an RRC Connection Reestablishment Complete message to the eNB. Specifically, the UE needs to perform encryption and integrity protection on the RRC connection re-establishment complete message according to the newly generated encryption and integrity protection key, such as the message integrity protection key K RRCinc and the message encryption key K RRCenc .
  • the data to be transmitted may be further included, thereby implementing uplink transmission of the data to be transmitted.
  • mode 1 and mode 2 when the UE determines that data is to be transmitted, the embodiment shown in FIG. 2 and FIG. 3 is sequentially executed;
  • the embodiment shown in FIG. 2 is first executed, and when the UE determines that data is to be transmitted, the embodiment shown in FIG. 3 is executed.
  • the cell selection or re-selection process is performed. During this period, when the UE has data to be transmitted, the third timer T2 is started. The second timer T1 and the first timer T0 are stopped to control the subsequent RRC connection re-establishment process by T2.
  • the UE receives the RRC connection re-establishment message sent by the eNB in the time period corresponding to the third timer T2, the timing of the third timer T2 is stopped. At this point, the RRC connection re-establishment is successful. Otherwise, if the UE does not receive the RRC connection re-establishment message in the time period corresponding to the third timer T2, the RRC connection re-establishment fails, and the UE performs one or more of the following operations:
  • the specific trigger-related state is passed.
  • the corresponding RRC connection re-establishment process is performed to recover the data transmission quickly and conveniently to complete the transmission of the data to be transmitted.
  • FIG. 5 is a flowchart of an implementation manner of an RRC connection establishment process except for a cell selection or reselection process according to an embodiment of the present invention. As shown in FIG. 5, subsequent RRC connections except for a cell selection or reselection process are performed.
  • the establishment process may include the following steps:
  • Step 501 The UE acquires uplink timing advance information and uplink transmission resources.
  • Step 502 The UE adjusts the uplink sending timing according to the uplink timing advance information, and sends an RRC connection setup request to the eNB by using the uplink transmission resource, where the RRC connection setup request includes the identifier information of the UE.
  • the identification information of the user equipment includes a temporary mobile subscriber identifier (S-Temporary Mobile Subscriber Identity, S-TMSI for short).
  • S-Temporary Mobile Subscriber Identity S-TMSI for short.
  • the uplink timing advance information and the uplink transmission resource are obtained by referring to the manner in the embodiment shown in FIG. 4 .
  • Step 503 The UE receives an RRC connection setup message sent by the eNB, where the RRC connection setup message includes recovery indication information.
  • the restoration indication information is used to instruct the UE to recover the data transmission by using the saved context information, where the RRC connection setup message is sent when the eNB determines that the context information of the UE is valid according to the S-TMSI.
  • the eNB determines whether the context information of the UE is valid according to the S-TMSI of the UE. When it is determined that the context information of the UE is valid in the eNB, the eNB sends an RRC connection setup message to the UE, where the RRC connection setup message carries the indication information indicating that the UE resumes data transmission by using the saved context information, that is, the foregoing restoration indication information.
  • the MME After changing the S-TMSI of the UE, the MME needs to inform the eNB of the new S-TMSI of the UE. Then, when the UE sends an RRC connection setup request to the eNB when the recovery process accesses the eNB, the new S-TMSI allocated by the MME is provided. Since the MME also informs the eNB of the current new S-TMSI of the UE, the eNB can find the context information of the UE and determine that the context information of the UE is valid. Otherwise, if the UE provides a new S-TMSI and the eNB does not know the new S-TMSI of the UE locally, the eNB may mistakenly think that the context information of the UE is not saved.
  • Step 504 The UE sends an RRC connection setup complete message to the eNB, where the RRC connection setup complete message includes the short MAC-I calculated according to the identifier information of the UE.
  • the UE After receiving the RRC connection setup message sent by the eNB, the UE determines that the RRC connection setup message includes the indication information that uses the saved context recovery transmission, and then the UE determines to send an RRC connection setup complete message to the eNB. First, the UE calculates the message integrity authentication code MAC-I by using the identification information of the UE, such as C-RNTI or S-TMSI, and intercepts the lower 16 bits of the MAC-I to obtain the short MAC-I, and further establishes the RRC connection. The short MAC-I is carried in the completion message.
  • the identification information of the UE such as C-RNTI or S-TMSI
  • the MAC-I is based on the identity information of the UE, the cell identifier of the current cell of the UE, and the cell serving the UE before the connection is established. (The cell serving the UE before the connection establishment may be current with the UE. The physical layer cell identifier of the cell is the same cell) is produced as an input parameter.
  • the original C-RNTI saved by the UE in the context information may be used, or the newly allocated C of the eNB acquired before receiving the RRC connection setup message may be used.
  • the RNTI performs the calculation, and the new C-RNTI may be carried in the context save indication message and allocated to the UE.
  • the eNB always carries the configuration information of the SRB (which may include the SRB1 and the SRB2) in the RRC connection setup message to prevent the UE from continuing to establish the configuration according to the RRC connection when the configuration of the saved SRB is lost locally on the UE side.
  • the configuration of the SRB provided in the message successfully completes the RRC connection establishment process. That is, even if the UE local context information has been lost, the UE does not need to retransmit the RRC connection setup request again, but can follow the current RRC connection setup message, and can complete the RRC connection completely according to the traditional RRC connection setup procedure.
  • the eNB For the eNB, if the eNB finds that the RRC connection setup complete message sent by the UE is the same as the previous conventional RRC connection setup complete message, for example, the message itself is not If the security is protected, or the short MAC-I is not carried in the message, the eNB sends a security activation command to the UE according to the conventional procedure.
  • Step 505 Acquire a security key, and perform encryption and/or integrity protection on the RRC connection setup complete message according to the security key.
  • the data to be transmitted may be encrypted and sent according to the security key.
  • the foregoing RRC connection setup complete message and the transmission of the data to be transmitted may be encrypted and transmitted.
  • the specific encryption key acquisition method and the encryption transmission method can be implemented as follows:
  • the UE directly obtains a pre-saved security key in the self, and the security key includes a message integrity protection key K RRCinc , a message encryption key K RRCenc , and a data encryption key K UPenc .
  • the UE performs encryption and/or integrity protection transmission on the RRC connection setup complete message according to the message integrity protection key K RRCinc and the message encryption key K RRCenc ; the UE encrypts the data to be transmitted according to the data encryption key K UPenc send.
  • the eNB may further send the security key indication information to the UE, where the security key indication information includes the security key information.
  • the UE updates the intermediate key KeNB according to the security key information, and generates a message integrity protection key K RRCinc according to the updated intermediate key KeNB and the integrity protection algorithm, according to the updated The intermediate key KeNB and the encryption algorithm generate a message encryption key K RRCenc and a data encryption key K UPenc .
  • the security key indication information is carried in any one of the following messages: a key update indication message, a data transmission indication message, an RRC connection setup message, and a message carrying the UE context save indication information.
  • the UE can perform encrypted transmission on the subsequent RRC control message according to the message integrity protection key K RRCinc and the message encryption key K RRCenc .
  • the UE may also perform encrypted transmission of the data to be transmitted according to the data encryption key K UPenc .
  • the foregoing RRC connection establishment request may be sent after the encryption and/or integrity protection according to the foregoing security key, and is similar to the processing of the RRC connection establishment completion message, and details are not described herein.
  • the UE sends an RRC connection setup complete message to the eNB, which may be as follows.
  • RRC connection setup complete message may be as follows.
  • the RRC connection setup complete message includes a short MAC-I calculated according to the identifier information of the UE.
  • the RRC connection setup complete message is encrypted by the UE to the eNB via the message integrity protection key K RRCinc and the message encryption key K RRCenc .
  • the RRC connection setup complete message includes the short MAC-I calculated according to the identifier information of the UE.
  • the three UEs send an RRC Connection Setup Complete message encrypted by the message integrity protection key K RRCinc and the message encryption key K RRCenc to the eNB, where the short MAC-I is not carried.
  • the following describes the recovery of data transmission by the RRC connection re-establishment process from the perspective of the interaction between the UE and the eNB for the foregoing modes 1, 2, 3, and 4, respectively.
  • FIG. 6 is a signaling interaction diagram of Embodiment 2 of a data transmission processing method according to an embodiment of the present invention. This embodiment is described with respect to mode 1. As shown in FIG. 6, the method specifically includes the following steps:
  • Step 601 The UE performs data transmission with the eNB.
  • Step 602 After a certain time, the UE determines that data that does not need to be transmitted is currently not continued.
  • Step 603 The UE sends a context information saving request to the eNB.
  • RRC suspend request to request to save the context information of the UE.
  • steps 602 and 603 are optional steps, and therefore are indicated by dashed lines in the figure.
  • Step 604 The eNB determines to save the context information of the UE, and saves the context information of the UE.
  • the eNB may determine that the context information of the UE may be saved when receiving the context information saving request sent by the UE.
  • the eNB may also determine, according to the case of performing data transmission with the UE, that the UE has not transmitted data within a certain period of time, and autonomously determines that the context information of the UE may be saved (or equivalently referred to as an RRC connection). Hang up).
  • Step 605 The eNB sends a context information saving indication message of the UE to the MME.
  • a context information save request message or an RRC Connection Suspend Request message, or an RRC Connection Suspend Indication message, to inform the MME that the UE will be in a context information save state or an RRC connection suspend state.
  • Step 606 The MME sends a UE bearer suspension indication message to the SGW.
  • the indication message is used to indicate that the bearer of the UE of the SGW is to be in a suspended state or to suspend the state of transmitting data.
  • the MME After receiving the UE context information saving indication message sent by the eNB, the MME determines that the UE is in the context information saving state or the RRC connection suspension state. Then, an indication message is sent to the SGW to indicate that the bearer of the UE of the SGW is to be in a suspended state, or to suspend the state of transmitting data.
  • Step 607 The S-GW sends a bearer suspension confirmation message to the MME.
  • Step 608 The MME sends a connection suspension confirmation message to the eNB.
  • Step 609 The eNB sends a context information saving indication message to the UE.
  • the RRC connection suspension indication message is an RRC connection release indication message
  • the context information storage indication message carries the context information storage indication information to instruct the UE to save the context information of the UE.
  • Step 610 The UE saves context information.
  • Step 611 The UE determines to be in an RLF state.
  • Step 612 When the UE determines that there is data to be transmitted, perform a cell selection or reselection process.
  • the UE determines that the context information of the UE needs to be saved or when it is determined that it needs to be in the RRC suspended state, the UE determines that it is currently in the RLF state (or may also be referred to as an extended RLF state, or a virtual RLF state), but The RRC connection re-establishment process is not triggered immediately, but the UE triggers the RRC connection re-establishment process when at least one of the following trigger conditions is met:
  • the UE uplink data arrives or the UE has uplink data to be sent;
  • a data transmission notification message such as a paging message, sent by the eNB
  • the UE When the UE determines that new uplink and/or downlink data needs to be transmitted, it triggers an RRC connection re-establishment process to the eNB, and first performs a cell selection or reselection process.
  • the cell selection or reselection process can be performed with reference to the aforementioned related embodiments.
  • Step 613 The UE sends a random access message (preamble) to the eNB.
  • Step 614 The eNB sends a random access response message to the UE.
  • the random access response message includes uplink timing advance information and uplink resource allocation information.
  • Step 615 The UE adjusts an uplink sending timing according to the uplink timing advance information, and acquires an uplink transmission resource by using the allocated uplink resource allocation information.
  • Step 616 The UE sends an RRC connection re-establishment request to the eNB.
  • the RRC connection re-establishment request includes the identifier information of the UE, such as a C-RNTI, a short message.
  • the integrity authentication code short MAC-I and the reestablishment cause indication information are used to indicate the RRC connection re-establishment cause.
  • Step 617 The eNB sends an RRC connection re-establishment message to the UE.
  • connection re-establishment message includes radio resource configuration information and security key information, such as nextHopChainingCount.
  • Step 618 The UE updates the corresponding configuration according to the radio resource configuration information, updates the intermediate key KeNB according to the security key information, generates K RRCinc based on the new intermediate key KeNB and the integrity protection algorithm, and generates K RRCenc and K according to the encryption algorithm. UPenc , activate each key.
  • Step 619 The UE sends an RRC Connection Reestablishment Complete message to the eNB.
  • the UE needs to perform encryption and integrity protection on the RRC connection re-establishment complete message according to the newly generated encryption and integrity protection key.
  • the data to be transmitted may be further included.
  • FIG. 7 is a signaling interaction diagram of Embodiment 3 of a data transmission processing method according to an embodiment of the present invention. This embodiment is described with respect to mode 3. As shown in Figure 7, the following steps are included:
  • Step 701 The UE performs data transmission with the eNB.
  • Step 702 After a certain time, the UE determines that data that does not need to be transmitted is currently not continued.
  • Step 703 The UE sends a context information save request to the eNB.
  • RRC suspend request to request to save the context information of the UE.
  • steps 702 and 703 are optional steps, and therefore are indicated by dashed lines in the figure.
  • Step 704 The eNB determines to save the context information of the UE, and saves the context information of the UE.
  • the eNB may determine that the context information of the UE may be saved when receiving the context information saving request sent by the UE.
  • the eNB may also determine, according to the case of performing data transmission with the UE, that the UE has not transmitted data within a certain period of time, and autonomously determines that the context information of the UE may be saved (or equivalently referred to as an RRC connection). Hang up).
  • Step 705 The eNB sends a context information saving indication message of the UE to the MME.
  • RRC Connection Suspend Request message or RRC Connection Suspend Indication message
  • RRC Connection suspension state to inform the MME that the UE will be in context
  • the information storage state is called an RRC connection suspension state.
  • Step 706 The MME sends a UE bearer suspension indication message to the SGW.
  • the indication message is used to indicate that the bearer of the UE of the SGW is to be in a suspended state or to suspend the state of transmitting data.
  • the MME After receiving the UE context information saving indication message sent by the eNB, the MME determines that the UE is in the context information saving state or the RRC connection suspension state. Then, an indication message is sent to the SGW to indicate that the bearer of the UE of the SGW is to be in a suspended state, or to suspend the state of transmitting data.
  • Step 707 The S-GW sends a bearer suspension confirmation message to the MME.
  • Step 708 The MME sends a connection suspension confirmation message to the eNB.
  • Step 709 The eNB sends a context information saving indication message to the UE.
  • the RRC connection suspension indication message is an RRC connection release indication message
  • the context information storage indication message carries the context information storage indication information to instruct the UE to save the context information of the UE.
  • Step 710 The UE saves context information.
  • Step 711 The UE determines to perform a cell selection or reselection process.
  • the UE first determines to enter the RLF state, and then determines to trigger the cell selection or reselection process.
  • the cell selection or reselection process can be performed with reference to the aforementioned related embodiments.
  • Step 712 When the UE determines that there is data to be transmitted, the timer T2 is started.
  • the UE does not immediately trigger the subsequent RRC connection re-establishment process, but the UE triggers the subsequent one when at least one of the following trigger conditions is met.
  • RRC connection re-establishment process :
  • the UE uplink data arrives or the UE has uplink data to be sent;
  • a data transmission notification message such as a paging message, sent by the eNB
  • the UE When the UE determines that new uplink and/or downlink data needs to be transmitted, it triggers a subsequent RRC connection re-establishment process to the eNB.
  • Step 713 The UE sends a random access message (preamble) to the eNB.
  • Step 714 The eNB sends a random access response message to the UE.
  • the random access response message includes uplink timing advance information and uplink resource allocation information.
  • Step 715 The UE adjusts an uplink sending timing according to the uplink timing advance information, and acquires an uplink transmission resource by using the allocated uplink resource allocation information.
  • Step 716 The UE sends an RRC connection re-establishment request to the eNB.
  • the RRC connection re-establishment request includes the identifier information of the UE, such as a C-RNTI, a short message integrity authentication code, a short MAC-I, and a reestablishment reason indication information, where the indication information is used to indicate an RRC connection re-establishment cause.
  • identifier information of the UE such as a C-RNTI, a short message integrity authentication code, a short MAC-I, and a reestablishment reason indication information, where the indication information is used to indicate an RRC connection re-establishment cause.
  • Step 717 The eNB sends an RRC connection re-establishment message to the UE.
  • connection re-establishment message includes radio resource configuration information and security key information, such as nextHopChainingCount.
  • Step 718 The UE stops the timer T2, updates the corresponding configuration according to the radio resource configuration information, updates the intermediate key KeNB according to the security key information, and generates K RRCinc and the encryption algorithm according to the new intermediate key KeNB and the integrity protection algorithm. Generate K RRCenc and K UPenc to activate each key.
  • the RRC connection re-establishment message is received by the UE, the RRC connection re-establishment is successful, and the timer T2 is stopped. Otherwise, the RRC connection re-establishment fails, and the UE enters the RRC idle state.
  • Step 719 The UE sends an RRC Connection Reestablishment Complete message to the eNB.
  • the UE needs to perform encryption and integrity protection on the RRC connection re-establishment complete message according to the newly generated encryption and integrity protection key.
  • the data to be transmitted may be further included.
  • FIG. 8 is a signaling interaction diagram of Embodiment 4 of a data transmission processing method according to an embodiment of the present invention. This embodiment is described with respect to mode 2. As shown in Figure 8, the following steps are included:
  • Step 801 The UE performs data transmission with the eNB.
  • Step 802 After a certain time, the UE determines that data that does not need to be transmitted is currently not continued.
  • Step 803 The UE sends a context information save request to the eNB.
  • RRC suspend request to request to save the context information of the UE.
  • steps 802 and 803 are optional steps, and therefore are indicated by dashed lines in the figure.
  • Step 804 The eNB determines to save the context information of the UE, and saves the context information of the UE.
  • the eNB may determine that the context information of the UE may be saved when receiving the context information saving request sent by the UE. Or, The eNB may also determine that the UE may save the context information of the UE (or equivalently, the hang of the RRC connection) when determining that the UE has not transmitted data within a certain period of time according to the data transmission with the UE. ).
  • Step 805 The eNB sends a context information saving indication message of the UE to the MME.
  • a context information save request message or an RRC Connection Suspend Request message, or an RRC Connection Suspend Indication message, to inform the MME that the UE will be in a context information save state or an RRC connection suspend state.
  • Step 806 The MME sends a UE bearer suspension indication message to the SGW.
  • the indication message is used to indicate that the bearer of the UE of the SGW is to be in a suspended state or to suspend the state of transmitting data.
  • the MME After receiving the UE context information saving indication message sent by the eNB, the MME determines that the UE is in the context information saving state or the RRC connection suspension state. Then, an indication message is sent to the SGW to indicate that the bearer of the UE of the SGW is to be in a suspended state, or to suspend the state of transmitting data.
  • Step 807 The S-GW sends a bearer suspension confirmation message to the MME.
  • Step 808 The MME sends a connection suspension confirmation message to the eNB.
  • Step 809 The eNB sends a context information saving indication message to the UE.
  • the RRC connection suspension indication message is an RRC connection release indication message
  • the context information storage indication message carries the context information storage indication information to instruct the UE to save the context information of the UE.
  • Step 810 The UE saves context information.
  • Step 811 The UE determines that it is in a timing synchronization state.
  • the UE may start a timer T3-1 in which the UE is always determined to be in the timing synchronization state.
  • Step 812 When the UE determines that there is data to be transmitted, it determines that it is in the RLF state, and performs a cell selection or reselection process.
  • the UE when at least one of the following trigger conditions is met, the UE triggers an RLF event:
  • the UE uplink data arrives or the UE has uplink data to be sent;
  • a data transmission notification message such as a paging message, sent by the eNB
  • the RLF event is triggered, thereby performing an RRC connection re-establishment procedure to the eNB, first performing a cell selection or reselection procedure.
  • the selection or reselection process can be performed with reference to the aforementioned related embodiments.
  • Step 813 The UE sends a random access message (preamble) to the eNB.
  • Step 814 The eNB sends a random access response message to the UE.
  • the random access response message includes uplink timing advance information and uplink resource allocation information.
  • Step 815 The UE adjusts an uplink sending timing according to the uplink timing advance information, and acquires an uplink transmission resource by using the allocated uplink resource allocation information.
  • Step 816 The UE sends an RRC connection re-establishment request to the eNB.
  • the RRC connection re-establishment request includes the identifier information of the UE, such as a C-RNTI, a short message integrity authentication code, a short MAC-I, and a reestablishment reason indication information, where the indication information is used to indicate an RRC connection re-establishment cause.
  • identifier information of the UE such as a C-RNTI, a short message integrity authentication code, a short MAC-I, and a reestablishment reason indication information, where the indication information is used to indicate an RRC connection re-establishment cause.
  • Step 817 The eNB sends an RRC connection re-establishment message to the UE.
  • connection re-establishment message includes radio resource configuration information and security key information, such as nextHopChainingCount.
  • Step 818 The UE updates the corresponding configuration according to the radio resource configuration information, updates the intermediate key KeNB according to the security key information, generates K RRCinc based on the new intermediate key KeNB and the integrity protection algorithm, and generates K RRCenc and K according to the encryption algorithm. UPenc , activate each key.
  • Step 819 The UE sends an RRC Connection Reestablishment Complete message to the eNB.
  • the UE needs to perform encryption and integrity protection on the RRC connection re-establishment complete message according to the newly generated encryption and integrity protection key.
  • the data to be transmitted may be further included.
  • FIG. 9 is a signaling interaction diagram of Embodiment 4 of a data transmission processing method according to an embodiment of the present invention. This embodiment is described with reference to Embodiment 4. As shown in FIG. 9, the following steps are included:
  • Step 901 The UE performs data transmission with the eNB.
  • Step 902 After a certain time, the UE determines that data that does not need to be transmitted is currently not continued.
  • Step 903 The UE sends a context information save request to the eNB.
  • RRC suspend request to request to save the context information of the UE.
  • steps 902 and 903 are optional steps, and therefore are indicated by dashed lines in the figure.
  • Step 904 The eNB determines to save the context information of the UE, and saves the context information of the UE.
  • the eNB may determine that the context information of the UE may be saved when receiving the context information saving request sent by the UE.
  • the eNB may also determine, according to the case of performing data transmission with the UE, that the UE has not transmitted data within a certain period of time, and autonomously determines that the context information of the UE may be saved (or equivalently referred to as an RRC connection). Hang up).
  • Step 905 The eNB sends a context information saving indication message of the UE to the MME.
  • a context information save request message or an RRC Connection Suspend Request message, or an RRC Connection Suspend Indication message, to inform the MME that the UE will be in a context information save state or an RRC connection suspend state.
  • Step 906 The MME sends a UE bearer suspension indication message to the SGW.
  • the indication message is used to indicate that the bearer of the UE of the SGW is to be in a suspended state or to suspend the state of transmitting data.
  • the MME After receiving the UE context information saving indication message sent by the eNB, the MME determines that the UE is in the context information saving state or the RRC connection suspension state. Then, an indication message is sent to the SGW to indicate that the bearer of the UE of the SGW is to be in a suspended state, or to suspend the state of transmitting data.
  • Step 907 The S-GW sends a bearer suspension confirmation message to the MME.
  • Step 908 The MME sends a connection suspension confirmation message to the eNB.
  • Step 909 The eNB sends a context information saving indication message to the UE.
  • the RRC connection suspension indication message is an RRC connection release indication message
  • the context information storage indication message carries the context information storage indication information to instruct the UE to save the context information of the UE.
  • Step 910 The UE saves context information.
  • Step 911 The UE determines to perform a cell selection or reselection process.
  • the cell selection or reselection process can be performed with reference to the aforementioned related embodiments.
  • Step 912 The UE determines that there is data to be transmitted.
  • the UE after performing cell selection or reselection, that is, after selecting a cell after cell selection or reselection, the UE does not immediately trigger the subsequent RRC connection establishment process, but waits for at least one of the following trigger conditions to be met.
  • the UE triggers the subsequent RRC connection establishment process:
  • the UE uplink data arrives or the UE has uplink data to be sent;
  • a data transmission notification message such as a paging message, sent by the eNB
  • the UE When the UE determines that new uplink and/or downlink data needs to be transmitted, it triggers a subsequent RRC connection establishment procedure to the eNB.
  • Step 913 The UE sends a random access message (preamble) to the eNB.
  • Step 914 The eNB sends a random access response message to the UE.
  • the random access response message includes uplink timing advance information and uplink resource allocation information.
  • Step 915 The UE adjusts an uplink sending timing according to the uplink timing advance information, and acquires an uplink transmission resource by using the allocated uplink resource allocation information.
  • Step 916 The UE sends an RRC connection setup request to the eNB.
  • the identity information S-TMSI of the UE is carried in the RRC connection setup request message.
  • Step 917 The eNB sends an RRC connection setup message to the UE.
  • the eNB After receiving the RRC connection setup request sent by the UE, the eNB determines whether the context information of the UE is valid according to the S-TMSI of the UE. When it is determined that the context information of the UE is valid in the eNB, the eNB sends an RRC connection setup message to the UE, where the RRC connection setup message carries recovery indication information indicating that the UE recovers the data transmission by using the saved context information.
  • Step 918 The UE determines to send an RRC Connection Setup Complete message to the eNB.
  • the RRC connection setup complete message carries a short MAC-I, and the short MAC-I is obtained by the UE using the identifier information of the UE, for example, C-RNTI or S-TMSI, and after obtaining the MAC-I, intercepting the lower 16 bits of the MAC-I of.
  • Step 919 The eNB sends a data transmission indication message to the UE.
  • the data transmission indication message includes security key information, such as nextHopChainingCount and the like.
  • Step 920 The UE updates the intermediate key KeNB according to the security key information, generates K RRCinc based on the new intermediate key KeNB and the integrity protection algorithm, and generates K RRCenc and K UPenc according to the encryption algorithm to activate each key.
  • Step 921 The UE encrypts the transmission data according to K UPenc and transmits the data to the eNB.
  • the UE may also perform encryption and integrity protection transmission on the subsequent RRC control message by using the newly generated encryption and integrity protection keys K RRCinc and K RRCenc .
  • FIG. 6, FIG. 7, FIG. 8, and FIG. 9 can quickly recover data transmission and reduce the implementation complexity of the UE by reusing the events such as RLF and the RRC connection re-establishment process in the current LTE protocol.
  • FIG. 10 is a flowchart of Embodiment 6 of a data transmission processing method according to an embodiment of the present invention. The present embodiment is described from the perspective of a base station eNB. As shown in FIG. 10, the method includes the following steps:
  • Step 1001 The eNB determines whether the user equipment does not perform data transmission within a preset time. When the user equipment does not perform data transmission within a preset time, step 1002 is performed.
  • the eNB determines whether the UE does not transmit data in a certain period of time, and may refer to the embodiment shown in FIG. 1 , for example, when receiving a context information save request of the UE, or according to a transmission record with the UE.
  • Step 1002 The eNB sends context information saving indication information and timer configuration information to the UE.
  • the UE saves the context information according to the indication information, and determines that the UE is in a state related to the trigger of the RRC connection re-establishment or the RRC connection establishment, and triggers the RRC connection re-establishment process or the RRC when there is uplink and/or downlink to-be-transmitted data. Connection establishment process.
  • the UE performs corresponding timer configuration and startup according to the timer configuration information.
  • Step 1003 The eNB receives an RRC connection setup request sent by the UE, where the RRC connection setup request includes the identifier information of the UE, and the identifier information of the UE includes the S-TMSI.
  • Step 1004 The eNB sends an RRC connection setup message to the UE when determining, according to the S-TMSI sent by the MME, that the context information is valid.
  • the description from the eNB side is performed only for the RRC connection establishment procedure.
  • the eNB After receiving the RRC connection setup request that carries the S-TMSI sent by the UE, the eNB first stores the context information of the UE, that is, whether the context information of the UE is valid, based on the S-TMSI of the UE received from the MME. Make a decision. When the determination is valid, the RRC connection setup message is sent to the UE, where the RRC connection setup message includes recovery indication information, where the recovery indication information is used to instruct the UE to resume data transmission by using the saved context information.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of a user equipment according to an embodiment of the present disclosure.
  • the user equipment includes: a receiving and saving module 11, a determining module 12, and a reconstruction processing module 13.
  • the receiving and saving module 11 is configured to receive the context information saving indication information sent by the base station, and save the context information of the user equipment according to the context information saving indication information.
  • a determining module 12 configured to determine that the user equipment is in a RRC connection with a radio resource control Establish or trigger the associated state of the RRC connection establishment.
  • the re-processing module 13 is configured to trigger an RRC connection re-establishment process or an RRC connection establishment process when the user equipment has uplink and/or downlink data to be transmitted, by using the saved context information and re-establishing or establishing The RRC connection transmits the data to be transmitted.
  • the user equipment further includes: a sending module 14.
  • the sending module 14 is configured to send a context information saving request to the base station to ensure that the base station saves the context information when determining that there is no data to be transmitted in the first preset time.
  • the context information saving indication information is sent by the base station according to the context information saving request, or the base station determines, according to the data transmission record with the user equipment, that the second preset time is not determined. And sending, when the data is transmitted between the user equipment, the second preset time is equal to or not equal to the first preset time.
  • the determining module 12 includes: a first determining submodule 121.
  • the first determining sub-module 121 is configured to determine that the user equipment is in a radio link failure RLF state.
  • the determining module 12 includes: a second determining submodule 122 and a third determining submodule 123.
  • the second determining sub-module 122 is configured to determine that the user equipment is in a synchronization state with the base station.
  • the third determining sub-module 123 is configured to determine that the user equipment is in an RLF state when the user equipment has the data to be transmitted.
  • the determining module 12 includes: a fourth determining submodule 124.
  • the fourth determining sub-module 124 is configured to determine that the user equipment is in an RRC connection re-establishment initialization state, and perform a cell selection or re-selection process according to the RRC connection re-establishment initialization state.
  • the determining module 12 includes: a fifth determining submodule 125.
  • a fifth determining sub-module 125 configured to determine that the user equipment is in an RRC connection setup initialization state, perform a cell selection or reselection procedure according to the RRC connection setup initialization state, or determine that the user equipment is in a cell selection or reselection the process of.
  • the reconstruction processing module 13 includes: a determining submodule 1301, a sending submodule 1302, and a selecting submodule 1303.
  • the determining sub-module 1301 is configured to determine whether the current serving cell of the user equipment meets a preset communication requirement.
  • the sending sub-module 1302 is configured to send an RRC connection re-establishment request or an RRC connection setup request to the base station if the current serving cell meets a preset communication requirement.
  • the selecting submodule 1303 is configured to perform a cell selection or reselection process if the current serving cell does not meet the preset communication requirement.
  • the sending sub-module 1302 is further configured to: when the selected base station is the base station, send an RRC connection re-establishment request or an RRC connection establishment request to the base station.
  • the sending submodule 1302 is further configured to:
  • the sending submodule 1302 is further configured to:
  • FIG. 11 may be used to implement the related technical solutions of the user equipment UE in FIG. 1 and FIG. 6 to FIG. 9.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of a user equipment according to an embodiment of the present disclosure.
  • the reconstruction processing module 13 includes a timing control sub-module 1304.
  • the timing control sub-module 1304 is configured to start the first timer, and release the context information after the first timer expires.
  • the selecting submodule 1303 is configured to perform a cell selection or reselection process in a time period corresponding to the first timer, and select a cell.
  • the timing control sub-module 1304 is configured to release the context information if a cell is not selected within a time period corresponding to the first timer.
  • the selecting submodule 1303 is specifically configured to:
  • the second timer is suspended or stopped, if the first cell is no longer a suitable cell, Then, the second timer is reset and restarted, and the second cell is selected in the i+1th to nth time segments, where i takes an integer from 1 to n, and n is an integer greater than 1.
  • the selection submodule 1303 is further configured to:
  • Performing a cell selection or reselection process if the selected base station is different from the base station that sends the context information saving indication information, or if the selected number of cell changes is greater than or equal to a preset number of times, then the user is When the device has the data to be transmitted, it is determined that the initial RRC connection establishment process is triggered.
  • the selection submodule 1303 is further configured to:
  • the location update process is triggered, and the data radio bearer is established with the new base station in the location update process.
  • the receiving and holding module 11 is further configured to:
  • the user equipment in the foregoing embodiment shown in FIG. 12 can be used to perform the related technical solutions of the user equipment UE in FIG. 2 and FIG. 6 to FIG. 9 , and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 13 is a schematic structural diagram of Embodiment 3 of a user equipment according to an embodiment of the present disclosure.
  • the reconstruction processing module 13 includes: a first acquisition sub-module 1305.
  • the first obtaining sub-module 1305 is configured to acquire uplink timing advance information and/or uplink transmission resources.
  • the sending sub-module 1302 is configured to adjust an uplink sending timing according to the uplink timing advance information, and/or send an RRC connection re-establishment request to the base station by using the uplink transmission resource, where the RRC connection re-establishment request includes At least one of the identification information of the user equipment, the short message integrity authentication code, the short MAC-I, and the reestablishment reason indication information, where the re-establishment reason indication information is used to indicate that the user equipment recovers by using the saved context information. data transmission.
  • the reconstruction processing module 13 further includes: a receiving submodule 1306 and a configuration submodule 1307.
  • the receiving sub-module 1306 is configured to receive an RRC connection re-establishment message sent by the base station, where the connection re-establishment message includes radio resource configuration information and security key information.
  • the configuration sub-module 1307 is configured to perform corresponding resource configuration according to the radio resource configuration information, and determine a recovery data radio bearer DRB.
  • the sending sub-module 1302 is further configured to send, to the base station, an RRC connection re-establishment complete message encrypted according to the security key information, where the RRC connection re-establishment complete message includes the to-be-transmitted data.
  • timing control sub-module 1304 is further configured to:
  • timing control sub-module 1304 is further configured to:
  • the receiving submodule receives the RRC connection reestablishment message within a time period corresponding to the third timer, stopping timing of the third timer;
  • the receiving submodule does not receive the RRC connection reestablishment message within a time period corresponding to the third timer, perform one or more of the following operations:
  • the cell selection or reselection is triggered, and an RRC connection establishment request is sent to the base station corresponding to the selected cell.
  • the first obtaining submodule 1305 includes: a determining unit, a first acquiring unit, and a second acquiring unit.
  • the determining unit is configured to determine whether the current coverage level has changed.
  • a first obtaining unit configured to: when the coverage level changes:
  • the base station Receiving a random access response message sent by the base station, where the random access response message includes the uplink timing advance information and uplink resource allocation information used to acquire the uplink transmission resource.
  • a second obtaining unit configured to: when the coverage level does not change:
  • the uplink transmission resource is obtained by any one of the following methods:
  • the determining unit is configured to:
  • FIG. 13 may be used to implement the related technical solutions of the user equipment in FIG. 3 to FIG. 4 and FIG. 6 to FIG. 8 , and the implementation principles and technical effects are similar. Narration.
  • FIG. 14 is a schematic structural diagram of Embodiment 4 of a user equipment according to an embodiment of the present invention.
  • the reconstruction processing module 13 includes:
  • the second obtaining sub-module 1310 is configured to acquire uplink timing advance information and/or uplink transmission resources.
  • the sending sub-module 1302 is further configured to: adjust an uplink sending timing according to the uplink timing advance information, and/or send an RRC connection setup request to the base station by using the uplink transmission resource, where the RRC connection setup request includes The identification information of the user equipment.
  • the receiving submodule 1306 is further configured to:
  • the sending submodule 1302 is further configured to: send an RRC connection setup complete message to the base station.
  • the sending sub-module 1302 is further configured to send an RRC connection setup complete message to the base station, where the RRC connection setup complete message includes a short MAC-I calculated according to the identifier information of the user equipment.
  • the reconstruction processing module 13 further includes: a third obtaining submodule 1311.
  • the third obtaining sub-module 1311 is configured to obtain a security key.
  • the sending sub-module 1302 is further configured to send the RRC connection setup complete message encryption and/or integrity protection according to the security key.
  • the sending submodule 1302 is further configured to perform encryption and/or integrity protection and then send the RRC connection setup request according to the security key.
  • the third obtaining submodule 1311 is specifically configured to:
  • the security key including a message integrity protection key K RRCinc , a message encryption key K RRCenc , and a data encryption key K UPenc .
  • the receiving sub-module 1306 is further configured to receive security key indication information sent by the base station, where the security key indication information includes security key update information.
  • the reconstruction processing module 13 further includes: an update submodule 1312, and a calculation submodule 1313.
  • the update sub-module 1312 is configured to update the intermediate key KeNB according to the security key update information.
  • the calculation sub-module 1313 is configured to generate a message integrity protection key K RRCinc according to the updated intermediate key KeNB and the integrity protection algorithm, and generate a message encryption key K RRCenc and data according to the updated intermediate key KeNB and the encryption algorithm. Encryption key K UPenc .
  • the security key indication information is carried in any one of the following messages: a key update indication message, a data transmission indication message, an RRC connection setup message, and a message carrying the UE context save indication information.
  • the second obtaining sub-module 1310 includes: a determining unit, a first acquiring unit, and a second acquiring unit.
  • the determining unit is configured to determine whether the current coverage level has changed.
  • a first obtaining unit configured to: when the coverage level changes:
  • the base station Receiving a random access response message sent by the base station, where the random access response message includes the uplink timing advance information and uplink resource allocation information used to acquire the uplink transmission resource.
  • a second obtaining unit configured to: when the coverage level does not change:
  • the uplink transmission resource is obtained by any one of the following methods:
  • the determining unit is configured to:
  • FIG. 14 The various implementations of the foregoing embodiment shown in FIG. 14 can be used to implement the related technical solutions of the user equipment in FIG. 5 and FIG. 9 , and the implementation principles and technical effects are similar, and details are not described herein again.
  • FIG. 15 is a schematic structural diagram of Embodiment 5 of a user equipment according to an embodiment of the present invention.
  • the user equipment includes: a receiver 21, a processor 22, and a transmitter 23.
  • the receiver 21 is configured to receive the context information saving indication information sent by the base station, and save the context information of the user equipment according to the context information saving indication information.
  • the processor 22 is configured to determine that the user equipment is in a state related to a trigger of a radio resource control RRC connection re-establishment or an RRC connection establishment.
  • the processor 22 is further configured to: when the user equipment has uplink and/or downlink data to be transmitted, trigger an RRC connection re-establishment process or an RRC connection establishment process, by using the saved context information and re-establishing or The established RRC connection transmits the data to be transmitted.
  • the processor 22 is further configured to determine that the user equipment is in a radio link failure RLF state.
  • the processor 22 is further configured to determine that the user equipment is in a synchronization state with the base station;
  • the processor 22 is further configured to determine that the user equipment is in an RRC connection re-establishment initialization state, and perform a cell selection or reselection procedure according to the RRC connection re-establishment initialization state.
  • the processor 22 is further configured to determine that the user equipment is in an RRC connection setup. Initializing the state, and performing a cell selection or reselection procedure according to the RRC connection setup initialization state, or determining that the user equipment is in a cell selection or reselection process.
  • the processor 22 is further configured to determine whether the current serving cell of the user equipment meets a preset communication requirement.
  • the user equipment further includes: a transmitter 23.
  • the transmitter 23 is configured to send an RRC connection re-establishment request or an RRC connection establishment request to the base station if the current serving cell meets a preset communication requirement;
  • the processor 22 is further configured to perform a cell selection or reselection process if the current serving cell does not meet the preset communication requirement.
  • the transmitter 23 is further configured to: when the selected base station is the base station, send an RRC connection re-establishment request or an RRC connection establishment request to the base station.
  • the transmitter 23 is further configured to:
  • the transmitter 23 is further configured to: when the user equipment exists the data to be transmitted, send an RRC connection establishment request to the base station by using the selected cell.
  • the processor 22 is further configured to: start a first timer, and release the context information after the first timer expires.
  • the processor 22 is further configured to perform a cell selection or reselection process in a time period corresponding to the first timer to select a cell; if the time period corresponding to the first timer is If one cell is not selected for RRC connection establishment or reconstruction, the context information is released.
  • processor 22 is further configured to:
  • the second timer is suspended or stopped, if the first cell is no longer a suitable cell, the second timer is reset and restarted, and in the i+1th to nth time segments, The second cell is selected, where i takes an integer from 1 to n, and n is an integer greater than one.
  • processor 22 is further configured to:
  • the transmitter 23 is further configured to: adjust uplink transmission according to the uplink timing advance information And transmitting an RRC connection re-establishment request to the base station by using the uplink transmission resource, where the RRC connection re-establishment request includes the identifier information of the user equipment, and a short message integrity authentication code short MAC- At least one of I and the reestablishment cause indication information, the reestablishment reason indication information is used to instruct the user equipment to resume data transmission by the saved context information.
  • the receiver 21 is further configured to receive an RRC connection re-establishment message sent by the base station, where the connection re-establishment message includes radio resource configuration information and security key information.
  • the processor 22 is further configured to perform corresponding resource configuration according to the radio resource configuration information, and determine a recovery data radio bearer DRB.
  • the transmitter 23 is further configured to send, to the base station, an RRC connection re-establishment complete message encrypted according to the security key information, where the RRC connection re-establishment complete message includes the to-be-transmitted data.
  • the transmitter 23 is further configured to send, to the base station, an RRC connection re-establishment complete message encrypted according to the security key information, where the RRC connection re-establishment complete message includes the to-be-transmitted data.
  • processor 22 is further configured to:
  • processor 22 is further configured to:
  • the receiving submodule receives the RRC connection reestablishment message within a time period corresponding to the third timer, stopping timing of the third timer;
  • the receiving submodule does not receive the RRC connection reestablishment message within a time period corresponding to the third timer, perform one or more of the following operations:
  • the cell selection or reselection is triggered, and an RRC connection establishment request is sent to the base station corresponding to the selected cell.
  • processor 22 is further configured to:
  • the transmitter 23 is further configured to: adjust an uplink sending timing according to the uplink timing advance information, and/or send an RRC connection setup request to the base station by using the uplink transmission resource, where the RRC connection setup request includes the Identification information of the user equipment.
  • receiver 21 is further configured to:
  • the transmitter 23 is further configured to: send an RRC connection setup complete message to the base station.
  • the transmitter 23 is further configured to send an RRC connection setup complete message to the base station, where the RRC connection setup complete message includes a short MAC-I calculated according to the identifier information of the user equipment.
  • the processor 22 is further configured to: acquire a security key.
  • the transmitter 23 is further configured to send the RRC connection setup complete message encryption and/or integrity protection according to the security key.
  • the transmitter 23 is further configured to perform encryption and/or integrity protection and then send the RRC connection setup request according to the security key.
  • the processor 22 is further configured to: acquire a security key in the context information, where the security key includes a message integrity protection key K RRCinc , a message encryption key K RRCenc , and a data encryption key K UPenc .
  • the receiver 21 is further configured to receive security key indication information sent by the base station, where the security key indication information includes security key update information.
  • the processor 22 is further configured to:
  • the security key indication information is carried in any one of the following messages: a key update indication message, a data transmission indication message, an RRC connection setup message, and carrying the UE context protection A message indicating the information.
  • processor 22 is further configured to:
  • the transmitter 23 is further configured to: when the coverage level changes, send a random access request to the base station.
  • the receiver 21 is further configured to receive a random access response message sent by the base station, where the random access response message includes the uplink timing advance information and uplink resource allocation information used to acquire the uplink transmission resource. .
  • the transmitter 23 is further configured to: when the coverage level does not change: acquire the currently locally saved uplink timing advance information as the uplink timing advance information.
  • the processor 22 is further configured to obtain the uplink transmission resource by using any one of the following manners:
  • processor 22 is further configured to:
  • the transmitter 23 is further configured to: when determining that there is no data to be transmitted in the first preset time, send a context information saving request to the base station, so that the base station saves the context information.
  • the context information saving indication information is sent by the base station according to the context information saving request, or the base station determines, according to the data transmission record with the user equipment, that the second preset time is determined.
  • the second preset time is equal to or not equal to the first preset time.
  • the receiver 21 is further configured to receive fourth timer configuration information sent by the base station, where the fourth timer is used to time the validity period of the security key in the context information.
  • the context information saving indication information is included in any one of the following indication messages. in:
  • the context information save indication message the RRC connection suspension indication message, and the RRC connection release indication message.
  • processor 22 is further configured to:
  • Performing a cell selection or reselection process if the selected base station is different from the base station that sends the context information saving indication information, or if the selected number of cell changes is greater than or equal to a preset number of times, then the user is When the device has the data to be transmitted, it is determined that the initial RRC connection establishment process is triggered.
  • the processor 22 is further configured to: perform a cell selection or reselection process, and when it is determined that the tracking domain of the selected cell changes, trigger a location update process, and establish a new base station in the location update process.
  • Data radio bearer
  • the receiver 21 is further configured to: receive the context information saving indication information sent by the new base station during the location update process or after the location update is completed.
  • the user equipment provided in this embodiment is used to implement the technical solution of the user equipment in the foregoing embodiments, and the implementation principle and technical effects are similar, and details are not described herein.
  • FIG. 16 is a schematic structural diagram of Embodiment 1 of a base station according to an embodiment of the present invention. As shown in FIG. 16, the method includes: a determining module 31 and a sending module 32.
  • the determining module 31 is configured to determine whether the user equipment does not perform data transmission within a preset time.
  • the sending module 32 is configured to: when the determining module determines that the user equipment does not perform data transmission within a preset time, send the context information saving indication information to the user equipment, so that the user equipment saves the context information, and Determining that the user equipment is in a state related to a trigger for establishing an RRC connection re-establishment or an RRC connection, and triggering an RRC connection re-establishment procedure or an RRC connection setup procedure when there is uplink and/or downlink to-be-transmitted data.
  • the sending module 32 is further configured to:
  • the determining module determines that the user equipment does not perform data transmission within a preset time, sending timer configuration information to the user equipment, where the timer configuration information includes a security key indicating the context information.
  • the base station further includes: a receiving module 33.
  • the receiving module 33 is configured to receive an RRC connection setup request sent by the user equipment, where the RRC connection setup request includes the identifier information of the user equipment, and the identifier information of the user equipment includes an S-TMSI.
  • the sending module 32 is further configured to: when the determining module determines that the context information is valid according to the S-TMSI sent by the mobility management entity MME, send an RRC connection setup message to the user equipment, where the RRC The connection establishment message includes recovery indication information, and the recovery indication information is used to instruct the user equipment to resume data transmission by using the saved context information.
  • the base station provided in this embodiment is used to perform the technical solution in the foregoing embodiment shown in FIG. 10, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 17 is a schematic structural diagram of Embodiment 2 of a base station according to an embodiment of the present invention. As shown in FIG. 17, the method includes:
  • the processor 41 is configured to determine whether the user equipment does not perform data transmission within a preset time.
  • the transmitter 42 is configured to: when the determining module determines that the user equipment does not perform data transmission within a preset time, send the context information saving indication information to the user equipment, so that the user equipment saves the context information, and Determining that the user equipment is in a state related to a trigger for establishing an RRC connection re-establishment or an RRC connection, and triggering an RRC connection re-establishment procedure or an RRC connection setup procedure when there is uplink and/or downlink to-be-transmitted data.
  • the transmitter 42 is further configured to:
  • the determining module determines that the user equipment does not perform data transmission within a preset time, sending timer configuration information to the user equipment, where the timer configuration information includes a security key indicating the context information.
  • the base station further includes:
  • the receiver 43 is configured to receive an RRC connection setup request sent by the user equipment, where the RRC connection setup request includes the identifier information of the user equipment, and the identifier information of the user equipment includes an S-TMSI.
  • the transmitter 42 is further configured to: when the determining module determines that the context information is valid according to the S-TMSI previously sent by the mobility management entity MME, send an RRC connection setup message to the user equipment, where the RRC The connection establishment message includes recovery indication information, and the recovery indication information is used to instruct the user equipment to resume data transmission by using the saved context information.
  • the base station provided in this embodiment is used to perform the technical solution in the foregoing embodiment shown in FIG. 10, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or may be other general-purpose processors and digital signal processors (English: Digital) Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), etc.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the steps including the foregoing method embodiments are performed; and the foregoing storage medium includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, solid state hard disk, Magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

Abstract

本发明提供一种数据传输处理方法、用户设备和基站，该方法包括：接收基站发送的上下文信息保存指示信息，并根据上下文信息保存指示信息保存用户设备的上下文信息；确定用户设备处于与RRC连接重建立或RRC连接建立的触发相关的状态；在用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，以通过用户设备的上下文信息和重建立或建立的RRC连接传输待传输数据。通过重用RRC连接重建立过程或RRC连接建立过程来快速地恢复数据传输，且由于是对LTE标准中RRC连接重建立过程或RRC连接建立过程的重用，用户设备无需进行复杂改变，实现简便。

Description

数据传输处理方法、用户设备和基站 技术领域
本发明实施例涉及通信技术，尤其涉及一种数据传输处理方法、用户设备和基站。
背景技术
在当前的长期演进(Long Term Evolution，简称LTE)系统中，用户设备(User Equipment，简称UE)在没有业务需要传输的情况下，通常处于空闲模式(idle mode)。当有业务需要进行传输时，UE需要从空闲模式进入连接模式再进行业务传输。
当每次UE有数据需要传输时，UE需要与网络侧设备间执行大量的消息交互流程来接入到LTE系统中进行数据传输。其中，网络侧设备主要包括基站，比如演进基站(eUTRAN NodeB，简称eNB)等接入网设备以及移动性管理实体(Mobility Management Entity，简称MME)、服务网关(Serviing GateWay，简称SGW)等核心网设备。为了减少上述消息交互流程中的消息信令，尤其是无线资源控制(Radio Resource Control，简称RRC)信令开销，可以在UE和eNB进行接入层上下文信息(以下简称为上下文信息)的保存，特别是UE特定的一些接入层参数的保存。
目前，通过引入新的RRC连接挂起和RRC连接恢复流程对UE进行上下文信息保存和数据传输恢复的控制。该控制过程简单来说包括：当UE在一定时间内都没有数据需要传输时，eNB执行将UE的RRC连接挂起(suspend)的处理过程，包括eNB、MME、SGW间的消息交互，以去激活UE的上下文信息、释放UE的无线承载。然后，eNB向UE发送RRC连接挂起消息，以通知UE保存相关上下文信息。此外，在该RRC链接挂起消息中，也可以包含一个恢复上下文信息的标识信息。当一段时候后，如果UE有上下行数据需要进行传输，则需要进行RRC连接的恢复过程。在恢复过程中，除了随机接入过程外，还包括UE向eNB发送携带有提供之前网络配置的恢复标识信息、UE的验证令牌(Auth token)、承载标识(Bearer Ind)、恢复原因(establ cause)等参数的 RRC连接恢复请求，eNB向UE反馈携带有承载描述信息(Bearer description)、承载标识(Bearer Ind)的RRC连接恢复消息，以指示UE恢复数据传输等交互过程。该RRC连接恢复过程的实现尤其对于UE来说，需要重新设计或者说重新在现有LTE相关处理流程的基础上添加额外的交互流程，与现有LTE流程不兼容，数据传输恢复慢，且实现复杂性较大。
发明内容
本发明实施例提供一种数据传输处理方法、用户设备和基站，用于使用UE的上下文信息快速、简便地恢复UE的数据传输。
本发明第一方面提供一种数据传输处理方法，由基站所服务的用户设备执行，该方法包括：
接收基站发送的上下文信息保存指示信息，并根据所述上下文信息保存指示信息保存所述用户设备的上下文信息；
确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态；
在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，以通过保存的所述上下文信息和重建立或建立的RRC连接传输所述待传输数据。
结合第一方面，在第一方面的第一种可能的实施方式中，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态，包括：
确定所述用户设备处于无线链路失败RLF状态。
结合第一方面，在第一方面的第二种可能的实施方式中，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态，包括：
确定所述用户设备处于与所述基站的定时同步状态；
在所述用户设备存在所述待传输数据时，确定所述用户设备处于RLF状态。
结合第一方面，在第一方面的第三种可能的实施方式中，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的 状态，包括：
确定所述用户设备处于RRC连接重建立初始化状态，并根据所述RRC连接重建立初始化状态执行小区选择或重选过程。
结合第一方面，在第一方面的第四种可能的实施方式中，，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态，包括：
确定所述用户设备处于RRC连接建立初始化状态，并根据所述RRC连接建立初始化状态执行小区选择或重选过程，或者确定所述用户设备处于小区选择或重选的过程。
结合第一方面的第一种或第二种可能的实施方式，在第一方面的第五种可能的实施方式中，，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，包括：
判断所述用户设备当前的服务小区是否满足预设通信要求；
若所述当前的服务小区满足预设通信要求，则在所述用户设备存在待传输数据时，通过当前服务小区向所述基站发送RRC连接重建立请求或RRC连接建立请求；
若所述当前的服务小区不满足预设通信要求，则执行小区选择或重选过程，在选择出小区对应的基站为所述基站，并且在所述用户设备存在待传输数据时，通过选择的小区向所述基站发送RRC连接重建立请求或RRC连接建立请求。
结合第一方面的第三种可能的实施方式，在第一方面的第六种可能的实施方式中，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，包括：
在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接重建立请求。
结合第一方面的第四种可能的实施方式，在第一方面的第七种可能的实施方式中，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，包括：
在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接建立请求。
结合第一方面至第一方面的第七种可能的实施方式中任一种可能的实施方式，在第一方面的第八种可能的实施方式中，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程之前，还包括：
启动第一定时器，并在所述第一定时器超时后，释放所述上下文信息。
结合第一方面的第八种可能的实施方式，在第一方面的第九种可能的实施方式中，所述启动第一定时器，并在所述第一定时器超时后，释放所述上下文信息，包括：
在所述第一定时器对应的时间段内执行小区选择或重选过程，并进行小区的选择；
若在所述第一定时器对应的时间段内没有选择到的小区，则释放所述上下文信息。
结合第一方面的第三种至第一方面的第九种可能的实施方式中任一种可能的实施方式，在第一方面的第十种可能的实施方式中，所述执行小区选择或重选过程，包括：
启动第二定时器，在所述第二定时器对应的第i个时间段内，若选择到的第一小区，则暂停或停止所述第二定时器；
在暂停或停止所述第二定时器后，若所述第一小区不再是合适的小区，则重置并重启所述第二定时器，在第i+1～n个时间段内，并选择第二小区，其中，i取1到n中的整数，n为大于1的整数。
结合第一方面的第五种至第一方面的第十种可能的实施方式中任一种可能的实施方式，在第一方面的第十一种可能的实施方式中，所述向所述基站发送RRC连接重建立请求，包括：
获取上行定时提前信息和/或上行传输资源；
根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接重建立请求，所述RRC连接重建立请求中包括所述用户设备的标识信息、短的消息完整性鉴权码short MAC-I和重建原因指示信息中的至少一种，所述重建原因指示信息用于指示所述用户设备通过保存的上下文信息恢复数据传输。
结合第一方面的第十一种可能的实施方式，在第一方面的第十二种可能 的实施方式中，所述方法还包括：
接收所述基站发送的RRC连接重建立消息，所述连接重建立消息中包括无线资源配置信息和安全密钥信息；
根据所述无线资源配置信息进行相应的资源配置，并确定恢复数据无线承载DRB。
结合第一方面的第十二种可能的实施方式，在第一方面的第十三种可能的实施方式中，所述方法还包括：
向所述基站发送根据所述安全密钥信息加密的RRC连接重建立完成消息，所述RRC连接重建立完成消息中包括所述待传输数据。
结合第一方面的第三种至第一方面的第十三种可能的实施方式中任一种可能的实施方式，在第一方面的第十四种可能的实施方式中，所述方法还包括：
在确定所述用户设备处于RRC连接重建立初始化状态的情况下，在所述用户设备存在所述待传输数据时或者在所述用户设备向所述基站发送RRC连接重建立请求时，启动第三定时器，并停止所述第一定时器和/或所述第二定时器。
结合第一方面的第十四种可能的实施方式，在第一方面的第十五种可能的实施方式中，所述方法还包括：
若在所述第三定时器对应的时间段内，收到所述RRC连接重建立消息，则停止所述第三定时器的计时；
若在所述第三定时器对应的时间段内，未收到所述RRC连接重建立消息，则执行下列操作中的一项或多项：
进入RRC空闲态；
停止所述第一定时器；
触发向所述小区对应的基站发送发送RRC连接建立请求；
触发执行小区选择或重选，并向选择的小区对应的基站发送RRC连接建立请求。
结合第一方面至第一方面的第十种可能的实施方式中任一种可能的实施方式，在第一方面的第十六种可能的实施方式中，所述在所述用户设备存 在上行和/或下行的待传输数据时，触发RRC连接建立过程，包括：
获取上行定时提前信息和/或上行传输资源；
根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息。
结合第一方面的第十六种可能的实施方式，在第一方面的第十七种可能的实施方式中，所述方法还包括：
接收所述基站发送的RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输；
向所述基站发送RRC连接建立完成消息。
结合第一方面的第十七种可能的实施方式，在第一方面的第十八种可能的实施方式中，所述向所述基站发送RRC连接建立完成消息，包括：
向所述基站发送RRC连接建立完成消息，所述RRC连接建立完成消息中包括根据所述用户设备的标识信息计算得到的short MAC-I；
和/或，
获取安全密钥；
根据所述安全密钥对所述RRC连接建立完成消息进行加密和/或完整性保护后发送。
结合第一方面的第十六种可能的实施方式，在第一方面的第十九种可能的实施方式中，所述向所述基站发送RRC连接建立请求，包括：
获取安全密钥；
根据所述安全密钥对所述RRC连接建立请求进行加密和/或完整性保护后发送。
结合第一方面的第十八种或第十九种可能的实施方式，在第一方面的第二十种可能的实施方式中，所述获取安全密钥，包括：
获取所述上下文信息中的安全密钥，所述安全密钥包括消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc和数据加密密钥KUPenc；
或者，
所述获取安全密钥，包括：
接收所述基站发送的安全密钥指示信息，所述安全密钥指示信息中包括安全密钥更新信息；
根据所述安全密钥更新信息更新中间密钥KeNB，根据更新后的中间密钥KeNB和完整性保护算法生成消息完整性保护密钥KRRCinc，根据更新后的中间密钥KeNB和加密算法生成消息加密密钥KRRCenc和数据加密密钥KUPenc；
其中，所述安全密钥指示信息携带在如下任一种消息中：密钥更新指示消息、数据传输指示消息、RRC连接建立消息、携带所述UE上下文保存指示信息的消息。
结合第一方面的第十一种或第一方面的第十六种可能的实施方式，在第一方面的第二十一种可能的实施方式中，所述获取上行定时提前信息和/或上行传输资源，包括：
判断当前的覆盖等级是否发生改变；
在所述覆盖等级发生改变时：
向所述基站发送随机接入请求；
接收所述基站发送的随机接入响应消息，所述随机接入响应消息中包括所述上行定时提前信息和用于获取所述上行传输资源的上行资源分配信息。
结合第一方面的第二十一种可能的实施方式，在第一方面的第二十二种可能的实施方式中，所述方法还包括：
在所述覆盖等级没有发生改变时：
获取当前本地保存的上行定时提前信息作为所述上行定时提前信息；
通过如下方式中的任一种获取所述上行传输资源：
向所述基站发送调度请求资源，以获取所述上行传输资源；
通过竞争上行共享信道资源，获取所述上行传输资源；
获取所述基站预先为所述用户设备配置的资源作为所述上行传输资源。
结合第一方面至第一方面的第二十二种可能的实施方式中任一种可能的实施方式，在第一方面的第二十三种可能的实施方式中，所述方法还包括：
在确定第一预设时间内没有需要进行传输的数据时，向所述基站发送 上下文信息保存请求，以使所述基站保存所述上下文信息。
结合第一方面至第一方面的第二十三种可能的实施方式中任一种可能的实施方式，在第一方面的第二十四种可能的实施方式中，所述上下文信息保存指示信息是所述基站根据所述上下文信息保存请求发送的，或者，是所述基站根据与所述用户设备的数据传输记录，在确定在第二预设时间内没有与所述用户设备间进行数据传输时发送的，所述第二预设时间等于或不等于所述第一预设时间。
结合第一方面至第一方面的第二十四种可能的实施方式中任一种可能的实施方式，在第一方面的第二十五种可能的实施方式中，还包括：
接收所述基站发送的第四定时器配置信息，所述第四定时器用于计时所述上下文信息中的安全密钥的有效期；
在接收到所述上下文信息保存指示信息时启动所述第四定时器。
结合第一方面至第一方面的第二十五种可能的实施方式中任一种可能的实施方式，在第一方面的第二十六种可能的实施方式中，所述上下文信息保存指示信息包含于以下指示消息中的任一种中：
上下文信息保存指示消息、RRC连接挂起指示消息、RRC连接释放指示消息。
结合第一方面至第一方面的第二十六种可能的实施方式中任一种可能的实施方式，在第一方面的第二十七种可能的实施方式中，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程之前，还包括：
执行小区选择或重选过程，若选择出的小区对应的基站与发送所述上下文信息保存指示信息的基站不同，或者，选择出的小区的改变次数大于或等于预设次数，则在所述用户设备存在所述待传输数据时，确定触发初始的RRC连接建立过程。
结合第一方面至第一方面的第二十七种可能的实施方式中任一种可能的实施方式，在第一方面的第二十八种可能的实施方式中，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程之前，还包括：
执行小区选择或重选过程，当确定选择出的小区的跟踪域发生改变 时，触发执行位置更新过程，并在位置更新过程中与新的基站建立数据无线承载。
结合第一方面的第二十八种可能的实施方式，在第一方面的第二十九种可能的实施方式中，所述方法还包括：
在位置更新过程中或位置更新完成后，接收所述新的基站发送的上下文信息保存指示信息。
本发明第二方面提供一种数据传输处理方法，由服务用户设备的基站的执行，该方法包括：
确定用户设备是否在预设时间内没有进行数据传输；
在所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送上下文信息保存指示信息，以使所述用户设备保存上下文信息，并确定所述用户设备处于与RRC连接重建立或RRC连接建立的触发相关的状态，并在存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程。
结合第二方面，在第二方面的第一种可能的实施方式中，，所述方法还包括：
在所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送定时器配置信息，所述定时器配置信息包括指示所述上下文信息中的安全密钥的有效期的定时器配置信息，以及指示所述上下文信息的有效期的定时器配置信息。
结合第二方面，在第二方面的第二种可能的实施方式中，所述方法还包括：
接收所述用户设备发送的RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息，所述用户设备的标识信息包括S-TMSI；
在根据移动性管理实体MME预先发送的所述S-TMSI确定所述上下文信息有效时，向所述用户设备发送RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输。
本发明第三方面提供一种用户设备，包括：
接收保存模块，用于接收基站发送的上下文信息保存指示信息，并根据所述上下文信息保存指示信息保存用户设备的上下文信息；
确定模块，用于确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态；
重建处理模块，用于在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，以通过保存的所述上下文信息和重建立或建立的RRC连接传输所述待传输数据。
结合第三方面，在第三方面的第一种可能的实施方式中，所述确定模块，包括：
第一确定子模块，用于确定所述用户设备处于无线链路失败RLF状态。
结合第三方面，在第三方面的第二种可能的实施方式中，所述确定模块，包括：
第二确定子模块，用于确定所述用户设备处于与所述基站的定时同步状态；
第三确定子模块，用于在所述用户设备存在所述待传输数据时，确定所述用户设备处于RLF状态。
结合第三方面，在第三方面的第三种可能的实施方式中，所述确定模块，包括：
第四确定子模块，用于确定所述用户设备处于RRC连接重建立初始化状态，并根据所述RRC连接重建立初始化状态执行小区选择或重选过程。
结合第三方面，在第三方面的第四种可能的实施方式中，所述确定模块，包括：
第五确定子模块，用于确定所述用户设备处于RRC连接建立初始化状态，并根据所述RRC连接建立初始化状态执行小区选择或重选过程，或者确定所述用户设备处于小区选择或重选的过程。
结合第三方面的第一种至第三方面的第四种可能的实施方式中的任一种可能的实现方式，在第三方面的第五种可能的实施方式中，所述重建处理模块包括：
判断子模块，用于判断所述用户设备当前的服务小区是否满足预设通信要求；
发送子模块，用于若所述当前的服务小区满足预设通信要求，则向所述基站发送RRC连接重建立请求或RRC连接建立请求；
选择子模块，用于若所述当前的服务小区不满足预设通信要求，则执行小区选择或重选过程；
所述发送子模块，还用于在选择出小区且所述小区对应的基站为所述基站时，向所述基站发送RRC连接重建立请求或RRC连接建立请求。
结合第三方面的第五种可能的实现方式，在第三方面的第六种可能的实施方式中，所述发送子模块还用于：
在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接重建立请求。
结合第三方面的第五种可能的实施方式，在第三方面的第七种可能的实施方式中，所述发送子模块还用于：
在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接建立请求。
结合第三方面至第三方面的第七种可能的实施方式中的任一种可能的实现方式，在第三方面的第八种可能的实施方式中，所述重建处理模块还包括：
计时控制子模块，用于启动第一定时器，并在所述第一定时器超时后，释放所述上下文信息。
结合第三方面的第八种可能的实施方式，在第三方面的第九种可能的实施方式中，：
所述选择子模块，用于在所述第一定时器对应的时间段内执行小区选择或重选过程，并选择出的一个小区；
所述计时控制子模块，用于若在所述第一定时器对应的时间段内没有选择到的小区，则释放所述上下文信息。
结合第三方面的第五种至第三方面的第九种可能的实施方式中的任一种可能的实现方式，在第三方面的第十种可能的实施方式中，所述选择子模块，用于：
启动第二定时器，在所述第二定时器对应的第i个时间段内，若选择到第一小区，则暂停或停止所述第二定时器；
在暂停或停止所述第二定时器后，若所述第一小区不再是合适的小区， 则重置并重启所述第二定时器，在第i+1～n个时间段内，并选择第二小区，其中，i取1到n中的整数，n为大于1的整数。
结合第三方面至第三方面的第十种可能的实施方式中的任一种可能的实现方式，在第三方面的第十一种可能的实施方式中，所述重建处理模块，包括：
第一获取子模块，用于获取上行定时提前信息和/或上行传输资源；
所述发送子模块，用于根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接重建立请求，所述RRC连接重建立请求中包括所述用户设备的标识信息、短的消息完整性鉴权码short MAC-I和重建原因指示信息中的至少一种，所述重建原因指示信息用于指示所述用户设备通过保存的上下文信息恢复数据传输。
结合第三方面的第十一种可能的实施方式，在第三方面的第十二种可能的实施方式中，所述重建处理模块还包括：
接收子模块，用于接收所述基站发送的RRC连接重建立消息，所述连接重建立消息中包括无线资源配置信息和安全密钥信息；
配置子模块，用于根据所述无线资源配置信息进行相应的资源配置，并确定恢复数据无线承载DRB。
结合第三方面的第十二种可能的实施方式，在第三方面的第十三种可能的实施方式中，所述发送子模块，还用于向所述基站发送根据所述安全密钥信息加密的RRC连接重建立完成消息，所述RRC连接重建立完成消息中包括所述待传输数据。
所述发送子模块，还用于向所述基站发送根据所述安全密钥信息加密的RRC连接重建立完成消息，所述RRC连接重建立完成消息中包括所述待传输数据。
结合第三方面的第八种至第三方面的第十三种可能的实施方式中的任一种可能的实现方式，在第三方面的第十四种可能的实施方式中，其特征在于，所述计时控制子模块还用于：
在确定所述用户设备处于RRC连接重建立初始化状态的情况下，在所述用户设备存在所述待传输数据时或者在所述用户设备向所述基站发送RRC连接重建立请求时，启动第三定时器，并停止所述第一定时器和/ 或所述第二定时器。
结合第三方面的第十四种可能的实施方式，在第三方面的第十五种可能的实施方式中，所述计时控制子模块还用于：
若在所述第三定时器对应的时间段内，所述接收子模块收到所述RRC连接重建立消息，则停止所述第三定时器的计时；
若在所述第三定时器对应的时间段内，所述接收子模块未收到所述RRC连接重建立消息，则执行下列操作中的一项或多项：
进入RRC空闲态；
停止所述第一定时器；
触发向所述小区对应的基站发送发送RRC连接建立请求；
触发执行小区选择或重选，并向选择的小区对应的基站发送RRC连接建立请求。
结合第三方面至第三方面的第十种可能的实施方式中的任一种可能的实现方式，在第三方面的第十六种可能的实施方式中，所述重建处理模块，包括：
第二获取子模块，用于获取上行定时提前信息和/或上行传输资源；
所述发送子模块，还用于根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息。
结合第三方面的第十六种可能的实施方式，在第三方面的第十七种可能的实施方式中，所述接收子模块还用于：
接收所述基站发送的RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输；
所述发送子模块还用于：向所述基站发送RRC连接建立完成消息。
结合第三方面的第十七种可能的实施方式，在第三方面的第十八种可能的实施方式中，所述发送子模块，还用于向所述基站发送RRC连接建立完成消息，所述RRC连接建立完成消息中包括根据所述用户设备的标识信息计算得到的short MAC-I；
和/或，
所述重建处理模块还包括：
第三获取子模块，用于获取安全密钥；
所述发送子模块，还用于根据所述安全密钥对所述RRC连接建立完成消息加密和/或完整性保护后发送。
结合第三方面的第十八种可能的实施方式，在第三方面的第十九种可能的实施方式中，所述发送子模块，还用于根据所述安全密钥对所述RRC连接建立请求进行加密和/或完整性保护后发送。
结合第三方面的第十八种可能的实施方式，在第三方面的第二十种可能的实施方式中，所述第三获取子模块具体用于：
获取所述上下文信息中的安全密钥，所述安全密钥包括消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc和数据加密密钥KUPenc；
或者，
所述接收子模块，还用于接收所述基站发送的安全密钥指示信息，所述安全密钥指示信息中包括安全密钥更新信息；
所述重建处理模块还包括：
更新子模块，用于根据所述安全密钥更新信息更新中间密钥KeNB；
计算子模块，用于根据更新后的中间密钥KeNB和完整性保护算法生成消息完整性保护密钥KRRCinc，根据更新后的中间密钥KeNB和加密算法生成消息加密密钥KRRCenc和数据加密密钥KUPenc；
其中，所述安全密钥指示信息携带在如下任一种消息中：密钥更新指示消息、数据传输指示消息、RRC连接建立消息、携带所述UE上下文保存指示信息的消息。
结合第三方面的第十一种至第三方面的第十六种可能的实施方式中的任一种可能的实现方式，在第三方面的第二十一种可能的实施方式中，所述第一获取子模块或所述第二获取子模块，包括：
判断单元，用于判断当前的覆盖等级是否发生改变；
第一获取单元，用于在所述覆盖等级发生改变时：
向所述基站发送随机接入请求；
接收所述基站发送的随机接入响应消息，所述随机接入响应消息中包括所述上行定时提前信息和用于获取所述上行传输资源的上行资源分配 信息。
结合第三方面的第二十一种可能的实施方式，在第三方面的第二十二种可能的实施方式中，所述第一获取子模块或所述第二获取子模块，还包括：
第二获取单元，用于在所述覆盖等级没有发生改变时：
获取当前本地保存的上行定时提前信息作为所述上行定时提前信息；
通过如下方式中的任一种获取所述上行传输资源：
向所述基站发送调度请求资源，以获取所述上行传输资源；
通过竞争上行共享信道资源，获取所述上行传输资源；
获取所述基站预先为所述用户设备配置的资源作为所述上行传输资源。
结合第三方面至第三方面的第二十二种可能的实施方式中的任一种可能的实现方式，在第三方面的第二十三种可能的实施方式中，还包括：
发送模块，用于在确定第一预设时间内没有需要进行传输的数据时，向所述基站发送上下文信息保存请求，以使所述基站保存所述上下文信息。
结合第三方面至第三方面的第二十三种可能的实施方式中的任一种可能的实现方式，在第三方面的第二十四种可能的实施方式中，所述上下文信息保存指示信息是所述基站根据所述上下文信息保存请求发送的，或者，是所述基站根据与所述用户设备的数据传输记录，在确定在第二预设时间内没有与所述用户设备间进行数据传输时发送的，所述第二预设时间等于或不等于所述第一预设时间。
结合第三方面至第三方面的第二十四种可能的实施方式中的任一种可能的实现方式，在第三方面的第二十五种可能的实施方式中，所述接收模块，还用于接收所述基站发送的第四定时器配置信息，并在接收到所述上下文信息保存指示信息时启动所述第四定时器；所述第四定时器用于计时所述上下文信息中的安全密钥的有效期。
结合第三方面至第三方面的第二十五种可能的实施方式中的任一种可能的实现方式，在第三方面的第二十六种可能的实施方式中，所述上下文信息保存指示信息包含于以下指示消息中的任一种中：
上下文信息保存指示消息、RRC连接挂起指示消息、RRC连接释放 指示消息。
结合第三方面至第三方面的第二十六种可能的实施方式中的任一种可能的实现方式，在第三方面的第二十七种可能的实施方式中，所述选择子模块还用于：
执行小区选择或重选过程，若选择出的小区对应的基站与发送所述上下文信息保存指示信息的基站不同，或者，选择出的小区的改变次数大于或等于预设次数，则在所述用户设备存在所述待传输数据时，确定触发初始的RRC连接建立过程。
结合第三方面至第三方面的第二十七种可能的实施方式中的任一种可能的实现方式，在第三方面的第二十八种可能的实施方式中，所述选择子模块还用于：
执行小区选择或重选过程，当确定选择出的小区的跟踪域发生改变时，触发执行位置更新过程，并在位置更新过程中与新的基站建立数据无线承载。
结合第三方面的第二十八种可能的实施方式，在第三方面的第二十九种可能的实施方式中，所述接收保存模块还用于：
在位置更新过程中或位置更新完成后，接收所述新的基站发送的上下文信息保存指示信息。
本发明第四方面提供一种基站，包括：
确定模块，用于确定用户设备是否在预设时间内没有进行数据传输；
发送模块，用于在所述确定模块确定所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送上下文信息保存指示信息，以使所述用户设备保存上下文信息，并确定所述用户设备处于与RRC连接重建立或RRC连接建立的触发相关的状态，并在存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程。
结合第四方面，在第四方面的第一种可能的实现方式中，所述发送模块还用于：
在所述确定模块确定所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送定时器配置信息，所述定时器配置信息包括指示所述上下 文信息中的安全密钥的有效期的定时器配置信息，以及指示所述上下文信息的有效期的定时器配置信息。
结合第四方面，在第四方面的第二种可能的实现方式中，还包括：
接收模块，用于接收所述用户设备发送的RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息，所述用户设备的标识信息包括S-TMSI；
所述发送模块，还用于在所述确定模块根据移动性管理实体MME预先发送的所述S-TMSI确定所述上下文信息有效时，向所述用户设备发送RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输。
本发明提供的数据传输处理方法、用户设备和基站，用户设备接收到基站发送的上下文信息保存指示消息后，随即将用户设备强制性确定为处于与RRC连接重建立或RRC连接建立的触发相关的状态，比如RLF状态等，在有数据需要传输时，基于该触发相关的状态随即触发RRC连接重建立过程或RRC连接建立过程，以通过重用RRC连接重建立过程或RRC连接建立过程来快速地恢复数据传输，且由于是对LTE标准中RRC连接重建立过程或RRC连接建立过程的重用，用户设备无需进行复杂改变，实现简便。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可并根据这些附图获得其他的附图。
图1为本发明实施例提供的数据传输处理方法实施例一的流程图；
图2为本发明实施例提供的小区选择或重选过程的流程图；
图3为本发明实施例提供的除小区选择或重选过程外的RRC连接重建立过程的流程图；
图4为步骤301的具体实现方式的流程图；
图5为本发明实施例提供的除小区选择或重选过程外的RRC连接建立过程一种实现方式的流程图；
图6为本发明实施例提供的数据传输处理方法实施例二的信令交互图；
图7为本发明实施例提供的数据传输处理方法实施例三的信令交互图；
图8为本发明实施例提供的数据传输处理方法实施例四的信令交互图；
图9为本发明实施例提供的数据传输处理方法实施例五的信令交互图；
图10为本发明实施例提供的数据传输处理方法实施例六的流程图；
图11为本发明实施例提供的用户设备实施例一的结构示意图；
图12为本发明实施例提供的用户设备实施例二的结构示意图；
图13为本发明实施例提供的用户设备实施例三的结构示意图；
图14为本发明实施例提供的用户设备实施例四的结构示意图；
图15为本发明实施例提供的用户设备实施例五的结构示意图；
图16为本发明实施例提供的基站实施例一的结构示意图；
图17为本发明实施例提供的基站实施例二的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为本发明实施例提供的数据传输处理方法实施例一的流程图，本发明的方案可以应用在LTE网络中，主要涉及到的交互网元包括UE、eNB以及核心网设备，比如MME、SGW。其中，该UE既可以是目前LTE系统中UE，也可以是窄带物联网(Narrow Band Internet Of Things，简称NB-IoT)中的UE。
目前，在3GPP成立了新的NB-IoT项目，该项目的目标是进一步扩展LTE系统，以支持大量的低吞吐量物联网设备或大量的对时延要求不敏感的物联网设备。对于这一类物联网设备而言，超低复杂度和超低功耗是两个关键的要求。
本实施例将从UE角度即以UE作为执行主体进行阐述。如图1所示，该数据传输处理方法具体包括如下步骤：
步骤101、UE接收eNB发送的上下文信息保存指示信息，并根据上下文信息保存指示信息保存UE的上下文信息。
步骤102、UE确定UE处于与RRC连接重建立或RRC连接建立的触发相关的状态。
步骤103、在存在上行和/或下行的待传输数据时，UE触发RRC连接重建立过程或RRC连接建立过程，以通过保存的上下文信息和重建立或建立的RRC连接传输所述待传输数据。
本实施例中，上述上下文信息保存指示信息的发出，是eNB在确定在一定时间内UE没有传输数据时，向UE发送的。
其中，eNB可以通过如下可选的方式确定在一定时间内UE没有传输数据：
第一种方式：UE在与网络进行数据传输的过程中，如果在完成当前的某个数据传输之后，一定时间内，没有后续需要传输的数据，即确定预设时间内没有需要进行传输的数据时，向eNB发送上下文信息保存请求，以使eNB保存UE的上下文信息即以请求eNB保存UE的上下文信息。此时，上下文信息保存指示信息是eNB根据该上下文信息保存请求发送的，也就是说，当eNB接收到该上下文信息保存请求时，确定UE在该时间内没有需要继续传输的数据，可以向UE发送上述上下文保存指示消息，在该上下文保存指示消息中携带有上述保存指示信息。
值得说明的是，UE上下文信息的保存是指在UE侧和网络侧即eNB都进行上下文信息的保存。此外，在具体实现时，上述上下文信息保存请求也可以称为RRC连接挂起请求消息等，上下文信息保存指示消息也可以称为RRC连接挂起指示消息、RRC连接释放指示消息等，不做具体限制。
第二种方式：该上下文信息保存指示信息是eNB根据与UE的数据传输记录，在确定在预设时间内没有与UE间进行数据传输时发送的。该方式中，eNB也可以是根据与UE进行数据传输的情况，确定UE没有数据需要继续传输时，自主确定可以进行UE的上下文信息的保存(或者等价 地称之为RRC连接的挂起或释放)，从而向UE发送上述上下文信息保存指示信息。
值得说明的是，eNB在确定UE一定时间内没有传输数据后，并非立刻向UE发送上述上下文保存指示信息，而是需要与核心网设备：MME、SGW交互，以完成网络侧的相关处理，比如UE的承载的挂起处理，在完成相关处理后，才向UE发送的。eNB与核心网设备的交互将在后续实施例中说明，本实施例不赘述。
进而，UE在收到eNB发送的上下文保存指示信息后，执行保存上下文信息。其中，一般地，该上下文信息可以包含UE的无线资源配置信息，安全算法，UE标示符或者称UE的标识信息，测量配置信息等其中的一项或多项。其中，无线资源配置信息可以包含物理层配置信息，MAC层配置信息，RLC层配置信息以及PDCP层配置信息中的一项或多项。
本实施例中，为了与现有LTE标准中相关处理流程相兼容，降低UE的实现复杂度，在执行完上下文信息保存后，UE随即强制性地将自身确定为处于与RRC连接重建立或RRC连接建立的的触发相关的状态。
其中，UE确定自身处于与RRC连接重建立或RRC连接建立的的触发相关的状态，可以包括如下几种可选的实现方式：
方式1：确定UE处于无线链路失败(Radio Link Failture，简称RLF)状态。
具体地，UE在确定需要保存UE的上下文信息时或者说在确定需要处于RRC挂起状态时，亦即接收到eNB发送的上下文保存指示信息时，UE确定当前处于RLF状态(或者也可以称之为扩展的RLF状态，或虚拟的RLF状态)。之所以说是扩展的或者虚拟的RLF状态，是为了与现有的RLF状态的触发原因区分开。本实施例中，UE此时并非真的处于RLF状态，只是被强制置为了RLF状态。
本实施例中，当UE确定自身处于RLF状态后，但非如现有真正处于RLF状态随即触发RRC连接重建立过程一样，本实施例不马上触发RRC连接重建立过程，而是待UE有需要进行传输的上行和/或下行的待传输数据时，UE才触发RRC连接重建立过程。
由于此时是强制性的将UE置于RLF状态，并非处于真正的RLF状 态，不是立即触发RRC连接重建，而是将RRC连接重建延迟到UE有数据需要传输时才触发，从而可以在有数据需要传输时，快速地通过现有LTE中的RRC连接重建立过程恢复数据传输。
方式2：确定UE处于与eNB的定时同步状态，在UE存在待传输数据时，确定UE处于RLF状态。
具体地，UE在确定需要保存UE的上下文信息时或者说确定处于RRC挂起状态时，还可以确定UE处于定时同步状态，即处于与eNB的定时同步状态。
具体地，此时UE可以启动一个定时器，在该定时器对应的时间段内UE可以被确定处于定时同步状态。如果UE有需要进行传输的待传输数据，则UE随即确定自身处于RLF状态，进而随即触发RRC连接重建立过程。
该方式中，在一般的正常流程中，UE需要检测与eNB间是否定时同步，如果失去定时同步，则随即触发RRC连接重建立过程。通过强制将UE确定为与eNB间保持了定时同步的状态，在有数据需要传输时，再强制性将UE确定为RLF状态，触发RRC连接重建立过程，使得在UE有数据需要传输时，通过触发RLF事件，通过重用现有RRC连接重建过程，能够快速地实现数据传输的恢复。
方式3：确定UE处于RRC连接重建立初始化状态，并根据所述RRC连接重建立初始化状态执行小区选择或重选过程。
具体地，UE在确定需要保存UE的上下文信息时或者说确定处于RRC挂起状态时，便确定UE处于RRC连接重建立初始化状态，即UE确定此时需要触发RRC连接重建立过程，只是此时需要随即执行的是小区选择或重选过程，即执行RRC连接重建过程的初始化阶段。或者，可选地，也可以是类似于方式1，UE先确定进入RLF状态(或者也可以称之为扩展的RLF状态，或虚拟的RLF状态)，然后再确定触发RRC连接重建立过程的初始化阶段。
该方式中，UE虽然在保存上下文信息后，随即触发了RRC连接重建立过程，但是只是先执行了小区选择或重选过程，其他RRC连接重建立过程并未执行，而是在UE有待传输数据需要进行传输时，才触发后续的RRC连接重建立的处理过程，比如随即接入、向eNB发送RRC连接重建立请求等。值得说明的是，本实施例中，触发RRC连接重建立过程，主要是指通过小区 选择或重选过程选出的小区向eNB发送RRC连接重建立请求。
可以理解的是，本实施例中，为了描述方便，将RRC连接重建立过程划分为初始化过程即小区选择或重选过程，以及除小区选择或重选过程外的其他RRC连接重建立过程。后续实施例中会对这两个过程的具体实现进行详细说明。
方式4：确定UE处于RRC连接建立初始化状态，并根据RRC连接建立初始化状态执行小区选择或重选过程，或者确定UE处于小区选择或重选的过程。
具体地，UE在确定需要保存UE的上下文信息时或者说确定处于RRC挂起状态时，便确定UE处于RRC连接建立初始化状态，即UE确定此时需要触发RRC连接建立过程，只是此时需要随即执行的是小区选择或重选过程。
该方式中，UE虽然在保存上下文信息后，随即触发了RRC连接建立过程，但是只是先执行了小区选择或重选过程，其他RRC连接建立过程并未执行，而是在UE有待传输数据需要进行传输时，才触发后续的RRC连接建立的处理过程，比如随即接入、向eNB发送RRC连接建立请求等。值得说明的是，本实施例中，触发RRC连接建立过程，主要是指通过小区选择或重选过程选出的小区向eNB发送RRC连接建立请求。而且，值得说明的是，在UE发出RRC连接建立请求之后，可以释放保存的上下文信息。
可以理解的是，本实施例中，为了描述方便，将RRC连接建立过程划分为初始化过程即小区选择或重选过程，以及除小区选择或重选过程外的其他RRC连接建立过程。后续实施例中会对这两个过程的具体实现进行详细说明。
本实施例中，当UE将自身确定为处于与RRC连接重建立或RRC连接建立的触发相关的上述任一种可选方式的触发状态后，在UE有待传输数据需要传输时，触发相应的处理过程。具体来说，针对上述方式1和方式2来说，在确定UE处于RLF状态的情况下，在存在待传输数据时，是触发执行小区选择或重选过程以及其他RRC连接重建立过程或其他RRC连接建立过程，即完整的RRC连接重建立过程或RRC连接建立过程；针对方式3来说，在确定UE处于RRC连接重建立初始化状态的情况下，在执行小区选择或重选过程后，在存在待传输数据时，执行其他RRC连接重建立过程， 即触发执行除小区选择或重选过程以外的其他RRC连接重建立过程，具体是向eNB发送RRC连接重建立请求。针对方式4来说，在确定UE处于RRC连接建立初始化状态的情况下，在执行小区选择或重选过程后，在存在待传输数据时，执行其他RRC连接建立过程，即触发执行除小区选择或重选过程以外的其他RRC连接建立过程，具体是向eNB发送RRC连接建立请求。
具体来说，UE可以通过如下可选的方式确定是否存在上行、下行的待传输数据：
UE根据应用层的指示确定有上行数据到达或者UE有上行数据需要发送时，确定存在上行的待传输数据；
或者，
UE在接收到eNB发送的数据传输通知消息时，确定有下行数据需要接收，从而确定存在下行的待传输数据。
其中，该数据传输通知消息比如可以是寻呼消息。
综上，针对方式1，UE在根据eNB的上下文信息保存指示信息保存上下文后，确定自身处于RLF状态，延迟到有待传输数据时，触发RRC连接重建立过程，以通过重用RRC连接重建立过程来快速恢复数据传输。
针对方式2，UE在根据eNB的上下文信息保存指示信息保存上下文后，确定自身处于与eNB的定时同步状态，延迟到有待传输数据时，确定自身处于RLF状态，随即触发RRC连接重建立过程，以通过重用RRC连接重建立过程来快速恢复数据传输。
针对方式3，UE在根据eNB的上下文信息保存指示信息保存上下文后，确定自身处于RRC连接重建立初始化状态，随即触发小区选择或重选过程，延迟到有待传输数据时，随即触发后续的RRC连接重建立过程，以通过重用RRC连接重建立过程来快速恢复数据传输。
针对方式4，UE在根据eNB的上下文信息保存指示信息保存上下文后，确定自身处于RRC连接建立初始化状态，随即触发小区选择或重选过程，延迟到有待传输数据时，随即触发后续的RRC连接建立过程，以通过修改RRC连接建立过程来快速恢复数据传输。
另外，值得说明的是，尤其对于方式1和方式2来说，在用户设备存在上行和/或下行的待传输数据时或者在UE有数据待传输之前，即向eNB 触发RRC连接重建立过程或RRC连接建立过程前，首先判断UE当前的服务小区是否满足预设通信要求，比如信号质量、接收信号强度等是否满足预设阈值。若当前的服务小区满足预设通信要求，则UE直接向eNB发送RRC连接重建立请求或RRC连接建立请求，而忽略即不执行小区选择或重选过程。若当前的服务小区不满足预设通信要求，则UE执行小区选择或重选过程，在选择出小区且该小区对应的eNB为发送上下文信息保存指示信息的eNB时，向该eNB发送RRC连接重建立请求RRC连接建立请求。
另外，针对方式1和方式2，需强调的是，不管当前UE实际信号质量是否满足通信需求，或者不管当前UE从信号质量的角度是否真正满足发生RLF的条件，都强制要求UE处于RLF状态。
本实施例中，当eNB确定UE一定时间内没有传输数据后，向UE发出上下文信息保存指示信息，UE接收到该上下文信息保存指示信息后，随即将UE强制性确定为处于与RRC连接重建立或RRC连接建立的触发相关的状态，比如RLF状态等，在有数据需要传输时，基于该触发相关的状态随即触发RRC连接重建立过程或RRC连接建立过程，以通过重用RRC连接重建立过程或RRC连接建立过程来快速地恢复数据传输，且由于是对LTE标准中现有RRC连接重建立过程、RRC连接建立过程的重用，UE无需进行复杂改变，实现简便。
上述实施例已经提到，对于RRC连接重建立过程或者RRC连接建立过程来说，可以划分为初始化阶段即小区选择或重选过程以及其他RRC连接重建立过程或RRC连接建立过程两个子过程。下面，结合图2所示实施例，对小区选择或重选过程的实现方式进行说明。该小区选择或重选过程针对上述方式1、方式2、方式3和方式4均适用。
图2为本发明实施例提供的小区选择或重选过程的流程图，如图2所示，小区选择或重选过程的具体实现，包括如下步骤：
步骤201、UE启动第一定时器，并在第一定时器对应的时间段内执行小区选择或重选过程，以选择一个小区。
步骤202、UE若在第一定时器对应的时间段内没有选择到的小区或第 一定时器超时，则释放上下文信息。
值得说明的是，本实施例中，第一定时器是用于控制保存UE的上下文信息的时间长度的，该第一定时器T0的长度可以是预设的值，或者也可以是eNB为UE进行配置的，例如可以在eNB指示UE保存上下文信息时，在上下文信息保存指示消息出携带有上述保存指示信息外，还在其中通知UE该第一定时器T0的长度。具体的第一定时器T0的长度可以是有限的值，或者也可以是无限长。第一定时器T0超时时，UE要释放其保存的上下文信息。
另外，UE执行小区选择或重选过程，也可以在该第一定时器T0的控制下进行，如果在第一定时器T0对应的时间段内，如果UE始终选择不到一个小区，则UE确定释放上下文信息，并进入RRC空闲态。
具体地，UE在第一定时器对应的时间段内执行小区选择或重选过程，并选择一个小区，具体可以通过如下方式实现：
UE启动第二定时器，在第二定时器对应的第i个时间段内，若选择到第一小区，则暂停或停止第二定时器；
在暂停或停止第二定时器后，若第一小区不再是合适的小区，则重置并重启第二定时器，在第i+1～n个时间段内，并选择第二小区。本发明各个实施例中合适的小区，是指该小区能够是的UE数据传输的信号质量，信号路损或信号传输速率等满足业务质量要求。
其中，i取1到n中的整数，n为大于1的整数，第一定时器对应的时间段大于第二定时器对应的时间段。
具体地，在第一定时器T0对应的时间段内，UE具体可以执行如下的小区选择或重选策略：
UE可以启动一个第二定时器T1。该第二定时器T1可以控制UE执行小区选择或重选相关的操作。然后UE可并根据小区选择或重选的规范进行小区选择或重选。例如具体地可以基于LTE的36.304协议执行。
在第二定时器T1对应的时间段内，UE若选择到一个小区时，则UE暂停或停止该第二定时器T1。此外，在一段时间后，若UE当前选择的小区不再是合适的小区，则UE重置并重启第二定时器T1，然后再次进行小区选择或重选，以选择其他的小区，如此反复，直到达到第一定时器T0的 长度为止或有待传输数据到达时为止。
值得说明的是，上述小区选择或重选过程针对方式1、方式2、方式3、方式4均适用，只是触发该过程的执行时机和执行次数不同。具体来说，针对方式1和方式2来说，由于小区选择或重选过程与对应的后续RRC连接重建立过程是连续执行的，因此，可以不用反复执行多个第二定时器T1的小区选择或重选过程，选出的小区即可。而针对方式3和方式4来说，小区选择或重选过程与后续对应的RRC连接重建立过程或RRC连接建立过程是分开执行的，因此，一般需要反复执行多个T1对应的选择过程，直到有待传输数据到达时。
另外，值得说明的是，在eNB向UE发送上下文信息保存指示信息的同时，还可以发送定时器配置信息，该定时器配置信息可以包括上述第一定时器T0的配置信息、第二定时器T1的配置信息，还可以包含安全密钥定时器即第四定时器T3的配置信息。该第四定时器用于计时上下文信息中的安全密钥的有效期。当然，该定时器配置信息中还可以包括下面所述的其他比如第三定时器T2的配置信息。
而且，一般来说，一个基站下对应有多个不同的小区，在上述小区选择或重选过程中，若选择出的小区对应的eNB与发送上下文信息保存指示信息的eNB不同，或者，选择出的小区的改变次数大于或等于预设次数，则在UE存在待传输数据时，UE确定触发初始的RRC连接建立过程，即按照现有RRC连接建立过程重新处理。
另外，在执行小区选择或重选过程中，当UE确定选择出的小区的跟踪域发生改变时，触发执行位置更新过程，并在位置更新过程中与新的基站建立数据无线承载。
具体的，小区选择或重选过程中，UE可能会选择到一个新的小区，而这个小区和以前的小区不属于同一TA(Track Area)，即跟踪域，则UE这个时候会被触发执行位置更新。传统的位置更新时，UE是不需要建立数据无线承载的，即只建立信令无线承载。而本实施例中，要求UE在位置更新时，同样要与eNB建立数据无线承载。
下面，结合图3所示实施例，对小区选择或重选过程之后的其他RRC 连接重建立过程的实现方式进行说明。该过程针对上述方式1、方式2和方式3基本相同，但针对方式3会有一点差别，后续详述。
图3为本发明实施例提供的除小区选择或重选过程外的RRC连接重建立过程的流程图，如图3所示，除小区选择或重选过程之外的后续其他RRC连接重建立过程，可以包括如下步骤：
步骤301、UE获取上行定时提前信息和上行传输资源。
实际实现中，UE获取上行定时提前信息和/或上行传输资源。
步骤302、UE根据上行定时提前信息调整上行发送定时，并采用上行传输资源向eNB发送RRC连接重建立请求，RRC连接重建立请求中包括UE的标识信息、短的消息完整性鉴权码short MAC-I(详见3GPP标准)和重建原因指示信息中的至少一种。
该重建原因指示信息用于指示UE通过保存的上下文信息恢复数据传输。
实际实现中，UE根据上行定时提前信息调整上行发送定时，和/或采用上行传输资源向eNB发送RRC连接重建立请求。
步骤303、UE接收eNB发送的RRC连接重建立消息，连接重建立消息中包括无线资源配置信息和安全密钥信息。
步骤304、UE根据无线资源配置信息进行相应的资源配置，并确定恢复数据无线承载。
值得说明的是，传统的RRC连接重建立过程，只恢复信令无线承载(Signaling Radio Bearer，简称SRB)，本实施例中，除了要恢复SRB外，还要恢复数据无线承载(Data Radio Bearer，简称DRB)。
步骤305、UE向eNB发送根据安全密钥信息加密的RRC连接重建立完成消息，RRC连接重建立完成消息中包括待传输数据。
具体来说，针对步骤301中获取上行定时提前信息和上行传输资源的获取方式来说，UE可以通过如下两种可选的方式获取上行定时提前信息和上行传输资源。
结合图4所示实施例，对步骤301的具体实现方式进行说明，如图4所示，该获取方式包括如下步骤：
步骤401、UE判断当前的覆盖等级是否发生改变，在覆盖等级发生改变时，执行步骤402-步骤403，在覆盖等级没有发生改变时，执行步骤404 以及步骤405-步骤407中的任一步骤。
步骤402、UE向eNB发送随机接入请求。
步骤403、UE接收eNB发送的随机接入响应消息，随机接入响应消息中包括上行定时提前信息和用于获取上行传输资源的上行资源分配信息。
具体地，UE可并根据根据无线资源管理(Radio Resource Management，简称RRM)测量来确定UE的覆盖等级是否发生改变。即当RRM测量结果的变化量未超过预设的一个阈值时，UE确定其覆盖等级未发生改变，否则如果超过该阈值，则确定UE的覆盖等级发生改变。
确定UE的覆盖等级发生改变时，UE向eNB发送随机接入请求(preamble)，eNB向UE反馈随机接入响应消息，该随机接入响应消息中包括上行定时提前信息和上行资源分配信息。从而，UE根据上行资源分配信息获取对应的上行传输资源。
步骤404、UE获取当前本地保存的上行定时提前信息作为所述上行定时提前信息。
如果UE确定覆盖等级没有发生改变，则UE使用当前保存的上行定时提前量信息，以用于在需要发送RRC连接重建立请求消息时，调整上行发送定时。
对于上行传输资源的获取，可以采用如下三个步骤中任一个步骤所描述的方式获取。
步骤405、UE向eNB发送调度请求资源，以获取上行传输资源。
为了获取上行传输资源，UE可以首先利用保存的调度请求(Scheduling Request，简称SR)资源的配置，向eNB发送SR资源，以获取上行传输资源。然后UE根据获取的上行传输资源发送RRC连接重建立请求。
步骤406、UE通过竞争上行共享信道资源，获取上行传输资源。
UE通过竞争上行共享信道资源的方式向eNB发送RRC连接重建立请求。
步骤407、UE获取eNB预先为UE配置的资源作为上行传输资源。
UE通过eNB预配置的资源发送RRC连接重建立请求。具体地，该预 配置的资源可以是eNB在通知UE保存上下文信息时一起通知UE的。
在UE根据上述两种不同情况下的获取方式获得上行定时提前信息和上行传输资源后，UE根据上行定时提前信息调整上行发送定时，并采用上行传输资源向eNB发送RRC连接重建立请求。
具体地，发送RRC连接重建立请求的方式如下：
在RRC连接重建立请求中携带UE的标识信息，例如小区无线网络临时标示符(Cell Radio Network Temporary Identifier，简称C-RNTI)、临时移动用户标示符(S-Temporary Mobile Subscriber Identity，简称S-TMSI)。计算消息完整性鉴权码(Message Authentication Code for Integrity，简称MAC-I)，并截取MAC-I的低位16bit，以获得short MAC-I，并将short MAC-I携带在RRC连接重建立请求中以用于eNB确认UE。其中，short MAC-I是基于UE的标识信息，UE的当前小区的小区标示符以及重建立之前为UE提供服务的小区(重建立之前为UE提供服务的小区可以与UE当前的小区是同一个小区)的物理层小区标示符作为输入参数而生产。
值得说明的是，short MAC-I的产生可以使用C-RNTI，也可以使用S-TMSI。并且，当使用C-RNTI是，是使用UE当前保存的之前服务基站分配的C-RNTI。
当使用C-RNTI产生short MAC-I，但是在RRC连接重建立请求里包含的是S-TMSI时，需要eNB根据UE上报的S-TMSI推导出该UE对应的C-RNTI，然后利用推导出的C-RNTI来对具其产生的short MAC-I与UE上报的short MAC-I进行验证。为此，eNB在通知UE保存上下文信息后，需要保存UE的S-TMSI。
此外，在RRC连接重建立请求中还携带有用于指示连接恢复或者数据传输恢复的指示信息即上述重建原因指示信息，以通知eNB该RRC连接重建立的原因。
eNB在接收到UE发送的RRC连接重建立请求后，为UE分配无线资源配置信息和安全密钥信息(例如nextHopChainingCount)，并将分配的上述信息携带于RRC连接重建立消息中向UE发送。
UE接收eNB发送的RRC连接重建立消息，根据无线资源配置信息进行相应的资源配置，恢复DRB，并向eNB发送根据安全密钥信息加密的 RRC连接重建立完成消息。
具体地，UE根据RRC连接重建立消息中的安全密钥信息更新中间密钥KeNB，并进一步基于新的中间密钥KeNB和完整性保护算法生成消息完整性保护密钥KRRCinc，根据更新后的中间密钥KeNB和加密算法生成消息加密密钥KRRCenc和数据加密密钥KUPenc。并立即将上述密钥激活进行后续的使用。
UE向eNB发送RRC连接重建立完成消息。具体地，UE需要根据新产生的上述加密和完整性保护密钥，比如消息完整性保护密钥KRRCinc，消息加密密钥KRRCenc对RRC连接重建立完成消息进行加密和完整性保护。在该RRC连接重建立完成消息中，可以进一步包含待传输数据，从而实现待传输数据的上行传输。
上述图2和图3所示的实施例，对于UE分别处于方式1、方式2和方式3的情况下来说：
对于方式1和方式2，在UE确定有待传输数据时，依次执行图2和图3所示实施例；
对于方式3，首先执行图2所示实施例，在UE确定有待传输数据时，执行图3所示实施例。
值得说明的时，对于方式3，确定UE处于RRC连接重建立初始化状态的情况下，执行小区选择或重选过程，在此期间，在UE存在待传输数据时，随即启动第三定时器T2，停止第二定时器T1、第一定时器T0，以通过T2控制后续的RRC连接重建立过程。
具体来说，若在第三定时器T2对应的时间段内，UE收到eNB发送的RRC连接重建立消息，则停止第三定时器T2的计时。此时说明RRC连接重建立成功。否则，若在第三定时器T2对应的时间段内，UE未收到该RRC连接重建立消息，说明RRC连接重建立失败，此时UE执行下列操作中的一项或多项：
进入RRC空闲态；
停止所述第一定时器；
触发向所述小区对应的基站发送发送RRC连接建立请求；
触发执行小区选择或重选，并向选择的小区对应的基站发送RRC连 接建立请求。
通过图2和图3所示的实施例，在UE强制性将自身确定为处于与RRC连接重建立的触发相关的状态后，当有数据需要传输时，分别针对处于的具体触发相关状态，通过执行相应的RRC连接重建立过程，以快速、方便地恢复数据传输，以完成待传输数据的传输。
下面，结合图5所示实施例，对小区选择或重选过程之后的其他RRC连接建立过程的实现方式进行说明。该过程针对上述方式4来说。
图5为本发明实施例提供的除小区选择或重选过程外的RRC连接建立过程一种实现方式的流程图，如图5所示，除小区选择或重选过程之外的后续其他RRC连接建立过程，可以包括如下步骤：
步骤501、UE获取上行定时提前信息和上行传输资源。
步骤502、UE根据上行定时提前信息调整上行发送定时，并采用上行传输资源向eNB发送RRC连接建立请求，RRC连接建立请求中包括UE的标识信息。
用户设备的标识信息包括临时移动用户标示符(S-Temporary Mobile Subscriber Identity，简称S-TMSI。
本实施例中，可以参考图4所示实施例中的方式获取上述上行定时提前信息和上行传输资源。
步骤503、UE接收eNB发送的RRC连接建立消息，RRC连接建立消息中包括恢复指示信息。
该恢复指示信息用于指示UE利用保存的上下文信息恢复数据传输，其中，RRC连接建立消息是eNB根据S-TMSI确定UE的上下文信息有效时发送的。
具体地，eNB接收到UE发送的RRC连接建立请求后，根据UE的S-TMSI确定UE的上下文信息是否有效。当确定UE的上下文信息在eNB有效时，eNB向UE发送RRC连接建立消息，该RRC连接建立消息中携带指示UE利用保存的上下文信息恢复数据传输的指示信息即上述恢复指示信息。
值得说明的是，如果在UE进入保存上下文的状态之前，如果MME 改变过UE的S-TMSI，那么MME需要将UE的新的S-TMSI通知eNB。然后UE在恢复过程接入eNB的时候即向eNB发送RRC连接建立请求时，提供的是MME分配的新的S-TMSI。由于MME也告诉了eNB这个UE当前的新的S-TMSI，这样eNB就可以找到这个UE的上下文信息，确定UE的上下文信息有效。否则如果UE提供新的S-TMSI，而eNB本地不知道UE的新的S-TMSI，eNB就会误以为没有保存这个UE的上下文信息。
步骤504、UE向eNB发送RRC连接建立完成消息，RRC连接建立完成消息中包括根据UE的标识信息计算得到的short MAC-I。
UE在接收到eNB发送的RRC连接建立消息后，确定RRC连接建立消息中包含利用保存的上下文恢复传输的指示信息后，则UE确定向eNB发送RRC连接建立完成消息。首先，UE利用UE的标识信息，例如C-RNTI或S-TMSI，计算消息完整性鉴权码MAC-I，并截取MAC-I的低位16bit以获得short MAC-I，进而，在RRC连接建立完成消息中携带该short MAC-I。
其中，MAC-I是基于UE的标识信息、UE的当前的小区的小区标示符以及本次连接建立之前为UE提供服务的小区(本次连接建立之前为UE提供服务的小区可以与UE当前的小区是同一个小区)的物理层小区标示符作为输入参数而生产。
值得说明的是，在利用C-RNTI计算Short MAC-I时，可以使用UE在上下文信息中保存的原来的C-RNTI，也可以使用在接收到RRC连接建立消息前获取的eNB新分配的C-RNTI进行计算，该新的C-RNTI可以是在上下文保存指示消息中携带而分配给UE的。
值得说明的是，eNB在RRC连接建立消息中总是携带SRB(可能包括SRB1和SRB2)的配置信息，以防止在UE侧本地丢失了保存的SRB的配置时，UE还可以继续根据RRC连接建立消息中提供的SRB的配置成功完成RRC连接建立过程。也就是说，即使UE本地的上下文信息已经丢失了，UE也不需要再次重新发送RRC连接建立请求，而是可以接着当前的RRC连接建立消息，就可以完全按照传统的RRC连接建立过程完成RRC连接的建立。对于eNB，如果eNB发现UE发送来的RRC连接建立完成消息是和以前传统的RRC连接建立完成消息一样，例如消息本身没 有经过安全保护，或者消息里没有携带short MAC-I，那么eNB就会按照传统流程向UE发送安全激活命令。
步骤505、获取安全密钥，并根据安全密钥对RRC连接建立完成消息进行加密和/或完整性保护后发送。
可选的，也可并根据安全密钥对待传输数据进行加密后发送。
本实施例中，对于上述RRC连接建立完成消息和待传输数据的发送可以是加密发送的。具体的加密密钥的获取方式以及加密发送方式可以通过如下方式实现：
可选的，UE直接获取自身中预先保存的之前的安全密钥，该安全密钥包括消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc和数据加密密钥KUPenc。
此时，UE根据可以消息完整性保护密钥KRRCinc和消息加密密钥KRRCenc对RRC连接建立完成消息进行加密和/或完整性保护发送；UE根据数据加密密钥KUPenc对待传输数据进行加密发送。
可选的，在UE向eNB发送RRC连接建立完成消息后，eNB还可以向UE发送安全密钥指示信息，该安全密钥指示信息中包括安全密钥信息。UE接收eNB发送的安全密钥指示信息后，根据安全密钥信息更新中间密钥KeNB，根据更新后的中间密钥KeNB和完整性保护算法生成消息完整性保护密钥KRRCinc，根据更新后的中间密钥KeNB和加密算法生成消息加密密钥KRRCenc和数据加密密钥KUPenc。
其中，所述安全密钥指示信息携带在如下任一种消息中：密钥更新指示消息、数据传输指示消息、RRC连接建立消息、携带所述UE上下文保存指示信息的消息。
从而，UE可并根据该消息完整性保护密钥KRRCinc和消息加密密钥KRRCenc对后续的RRC控制消息进行加密发送。UE还可并根据数据加密密钥KUPenc对待传输数据进行加密发送。
值得说明的是，对于上述RRC连接建立请求的发送，也可以是根据上述安全密钥进行加密和/或完整性保护后发送的，与对RRC连接建立完成消息的处理类似，不再赘述。
可选的，UE向eNB发送RRC连接建立完成消息，可以有如下几种 可选的实现方式：
其一，RRC连接建立完成消息中包括根据UE的标识信息计算得到的short MAC-I。
其二，UE向eNB经消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc加密的RRC连接建立完成消息，RRC连接建立完成消息中包括根据UE的标识信息计算得到的short MAC-I。
其三UE向eNB发送经消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc加密的RRC连接建立完成消息，其中不携带short MAC-I。
下面分别针对上述方式1、方式2、方式3和方式4，从UE与eNB交互的角度，对通过RRC连接重建立过程恢复数据传输进行说明。
图6为本发明实施例提供的数据传输处理方法实施例二的信令交互图，本实施例针对方式1来进行说明。如图6所示，具体包括如下步骤：
步骤601、UE与eNB进行数据传输。
步骤602、在一定时间后，UE确定当前没有继续需要传输的数据。
步骤603、UE向eNB发送上下文信息保存请求。
或者也可以称为RRC挂起请求，以请求进行UE的上下文信息的保存。
上述步骤602和603为可选步骤，因此图中用虚线标示。
步骤604、eNB确定进行UE的上下文信息的保存，并保存UE的上下文信息。
或者等价地称之为RRC连接的挂起。具体地，eNB可以是在收到UE发送的上下文信息保存请求时，确定可以进行UE的上下文信息的保存。或者，eNB也可以是根据与UE之间进行数据传输的情况，确定UE已经在一定时间内没有传输数据时，自主确定可以进行UE的上下文信息的保存(或者等价地称之为RRC连接的挂起)。
步骤605、eNB向MME发送UE的上下文信息保存指示消息。
或者称为上下文信息保存请求消息，或者称为RRC连接挂起请求消息，或者称为RRC连接挂起指示消息，以通知MME该UE将处于上下文信息保存状态或者称为RRC连接挂起状态。
步骤606、MME向SGW发送UE承载挂起指示消息。
该指示消息用于指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
MME收到eNB发送的UE上下文信息保存指示消息后，确定UE将处于上下文信息保存状态或者RRC连接挂起状态。然后向SGW发送指示消息，以指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
步骤607、S-GW向MME发送承载挂起确认消息。
步骤608、MME向eNB发送连接挂起确认消息。
步骤609、eNB向UE发送上下文信息保存指示消息。
或者等价地称之为RRC连接挂起指示消息，RRC连接释放指示消息，该上下文信息保存指示消息中携带上下文信息保存指示信息，以命令UE保存UE的上下文信息。
步骤610、UE保存上下文信息。
步骤611、UE确定处于RLF状态。
步骤612、UE确定存在待传输数据时，执行小区选择或重选过程。
具体地，UE在确定需要保存UE的上下文信息时或者在确定需要处于RRC挂起状态时，UE确定当前处于RLF状态(或者也可以称之为扩展的RLF状态，或虚拟的RLF状态)，但不马上触发RRC连接重建立过程，而是待下列触发条件的至少一项满足时，UE才触发RRC连接重建立过程：
UE上行数据到达或者UE有上行数据需要发送；
UE接收到eNB发送的数据传输通知消息，例如寻呼消息；
UE确定有新的上行和/或下行数据需要传输时，触发执行向eNB的RRC连接重建立过程，首先执行小区选择或重选过程。小区选择或重选过程可以参考前述相关实施例执行。
步骤613、UE向eNB发送随机接入消息(preamble)。
步骤614、eNB向UE发送随机接入响应消息。
随机接入响应消息包含上行定时提前信息和上行资源分配信息。
步骤615、UE根据上行定时提前信息调整上行发送定时，并利用分配的上行资源分配信息获取上行传输资源。
步骤616、UE向eNB发送RRC连接重建立请求。
RRC连接重建立请求中包括UE的标识信息，比如C-RNTI、短的消息 完整性鉴权码short MAC-I和重建原因指示信息，该指示信息用于指示RRC连接重建立原因。
步骤617、eNB向UE发送RRC连接重建立消息。
其中，连接重建立消息中包括无线资源配置信息和安全密钥信息，例如nextHopChainingCount。
步骤618、UE根据无线资源配置信息更新对应的配置，根据安全密钥信息更新中间密钥KeNB，并基于新的中间密钥KeNB和完整性保护算法生成KRRCinc以及根据加密算法生成KRRCenc和KUPenc，将各密钥激活。
步骤619、UE向eNB发送RRC连接重建立完成消息。
具体地，UE需要根据新产生的上述的加密和完整性保护密钥对RRC连接重建立完成消息进行加密和完整性保护。在该RRC连接重建立完成消息中，可以进一步包含待传输数据。
图7为本发明实施例提供的数据传输处理方法实施例三的信令交互图，本实施例针对方式3来进行说明。如图7所示，包括如下步骤：
步骤701、UE与eNB进行数据传输。
步骤702、在一定时间后，UE确定当前没有继续需要传输的数据。
步骤703、UE向eNB发送上下文信息保存请求。
或者也可以称为RRC挂起请求，以请求进行UE的上下文信息的保存。
上述步骤702和703为可选步骤，因此图中用虚线标示。
步骤704、eNB确定进行UE的上下文信息的保存，并保存UE的上下文信息。
或者等价地称之为RRC连接的挂起。具体地，eNB可以是在收到UE发送的上下文信息保存请求时，确定可以进行UE的上下文信息的保存。或者，eNB也可以是根据与UE之间进行数据传输的情况，确定UE已经在一定时间内没有传输数据时，自主确定可以进行UE的上下文信息的保存(或者等价地称之为RRC连接的挂起)。
步骤705、eNB向MME发送UE的上下文信息保存指示消息。
或者称为上下文信息保存请求消息，或者称为RRC连接挂起请求消息，或者称为RRC连接挂起指示消息，以通知MME该UE将处于上下文信 息保存状态或者称为RRC连接挂起状态。
步骤706、MME向SGW发送UE承载挂起指示消息。
该指示消息用于指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
MME收到eNB发送的UE上下文信息保存指示消息后，确定UE将处于上下文信息保存状态或者RRC连接挂起状态。然后向SGW发送指示消息，以指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
步骤707、S-GW向MME发送承载挂起确认消息。
步骤708、MME向eNB发送连接挂起确认消息。
步骤709、eNB向UE发送上下文信息保存指示消息。
或者等价地称之为RRC连接挂起指示消息，RRC连接释放指示消息，该上下文信息保存指示消息中携带上下文信息保存指示信息，以命令UE保存UE的上下文信息。
步骤710、UE保存上下文信息。
步骤711、UE确定执行小区选择或重选过程。
或者，UE先确定进入RLF状态，再确定触发小区选择或重选过程。
小区选择或重选过程可以参考前述相关实施例执行。
步骤712、UE确定存在待传输数据时，启动定时器T2。
具体地，UE在执行完小区选择或重选后，即选择了一个小区后，不马上触发后续的RRC连接重建立过程，而是待下列触发条件的至少一项满足时，UE才触发后续的RRC连接重建立过程：
UE上行数据到达或者UE有上行数据需要发送；
UE接收到eNB发送的数据传输通知消息，例如寻呼消息；
UE确定有新的上行和/或下行数据需要传输时，触发执行向eNB的后续RRC连接重建立过程。
步骤713、UE向eNB发送随机接入消息(preamble)。
步骤714、eNB向UE发送随机接入响应消息。
随机接入响应消息包含上行定时提前信息和上行资源分配信息。
步骤715、UE根据上行定时提前信息调整上行发送定时，并利用分配的上行资源分配信息获取上行传输资源。
步骤716、UE向eNB发送RRC连接重建立请求。
RRC连接重建立请求中包括UE的标识信息，比如C-RNTI、短的消息完整性鉴权码short MAC-I和重建原因指示信息，该指示信息用于指示RRC连接重建立原因。
步骤717、eNB向UE发送RRC连接重建立消息。
其中，连接重建立消息中包括无线资源配置信息和安全密钥信息，例如nextHopChainingCount。
步骤718、UE停止定时器T2，根据无线资源配置信息更新对应的配置，根据安全密钥信息更新中间密钥KeNB，并基于新的中间密钥KeNB和完整性保护算法生成KRRCinc以及根据加密算法生成KRRCenc和KUPenc，将各密钥激活。
如果UE接收到上述RRC连接重建立消息，则说明RRC连接重建立成功，停止定时器T2，否则，说明RRC连接重建立失败，UE进入RRC空闲态。
步骤719、UE向eNB发送RRC连接重建立完成消息。
具体地，UE需要根据新产生的上述的加密和完整性保护密钥对RRC连接重建立完成消息进行加密和完整性保护。在该RRC连接重建立完成消息中，可以进一步包含待传输数据。
图8为本发明实施例提供的数据传输处理方法实施例四的信令交互图，本实施例针对方式2来进行说明。如图8所示，包括如下步骤：
步骤801、UE与eNB进行数据传输。
步骤802、在一定时间后，UE确定当前没有继续需要传输的数据。
步骤803、UE向eNB发送上下文信息保存请求。
或者也可以称为RRC挂起请求，以请求进行UE的上下文信息的保存。
上述步骤802和803为可选步骤，因此图中用虚线标示。
步骤804、eNB确定进行UE的上下文信息的保存，并保存UE的上下文信息。
或者等价地称之为RRC连接的挂起。具体地，eNB可以是在收到UE发送的上下文信息保存请求时，确定可以进行UE的上下文信息的保存。或者， eNB也可以是根据与UE之间进行数据传输的情况，确定UE已经在一定时间内没有传输数据时，自主确定可以进行UE的上下文信息的保存(或者等价地称之为RRC连接的挂起)。
步骤805、eNB向MME发送UE的上下文信息保存指示消息。
或者称为上下文信息保存请求消息，或者称为RRC连接挂起请求消息，或者称为RRC连接挂起指示消息，以通知MME该UE将处于上下文信息保存状态或者称为RRC连接挂起状态。
步骤806、MME向SGW发送UE承载挂起指示消息。
该指示消息用于指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
MME收到eNB发送的UE上下文信息保存指示消息后，确定UE将处于上下文信息保存状态或者RRC连接挂起状态。然后向SGW发送指示消息，以指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
步骤807、S-GW向MME发送承载挂起确认消息。
步骤808、MME向eNB发送连接挂起确认消息。
步骤809、eNB向UE发送上下文信息保存指示消息。
或者等价地称之为RRC连接挂起指示消息，RRC连接释放指示消息，该上下文信息保存指示消息中携带上下文信息保存指示信息，以命令UE保存UE的上下文信息。
步骤810、UE保存上下文信息。
步骤811、UE确定处于定时同步状态。
具体地，UE可以启动一个定时器T3-1，在该定时器内UE一直被确定处于定时同步状态。
步骤812、UE确定存在待传输数据时，确定处于RLF状态，执行小区选择或重选过程。
具体地，待下列触发条件的至少一项满足时，UE触发发生了RLF事件：
UE上行数据到达或者UE有上行数据需要发送；
UE接收到eNB发送的数据传输通知消息，例如寻呼消息；
UE确定有新的上行和/或下行数据需要传输时，触发RLF事件，从而执行向eNB的RRC连接重建立过程，首先执行小区选择或重选过程。小区 选择或重选过程可以参考前述相关实施例执行。
步骤813、UE向eNB发送随机接入消息(preamble)。
步骤814、eNB向UE发送随机接入响应消息。
随机接入响应消息包含上行定时提前信息和上行资源分配信息。
步骤815、UE根据上行定时提前信息调整上行发送定时，并利用分配的上行资源分配信息获取上行传输资源。
步骤816、UE向eNB发送RRC连接重建立请求。
RRC连接重建立请求中包括UE的标识信息，比如C-RNTI、短的消息完整性鉴权码short MAC-I和重建原因指示信息，该指示信息用于指示RRC连接重建立原因。
步骤817、eNB向UE发送RRC连接重建立消息。
其中，连接重建立消息中包括无线资源配置信息和安全密钥信息，例如nextHopChainingCount。
步骤818、UE根据无线资源配置信息更新对应的配置，根据安全密钥信息更新中间密钥KeNB，并基于新的中间密钥KeNB和完整性保护算法生成KRRCinc以及根据加密算法生成KRRCenc和KUPenc，将各密钥激活。
步骤819、UE向eNB发送RRC连接重建立完成消息。
具体地，UE需要根据新产生的上述的加密和完整性保护密钥对RRC连接重建立完成消息进行加密和完整性保护。在该RRC连接重建立完成消息中，可以进一步包含待传输数据。
图9为本发明实施例提供的数据传输处理方法实施例四的信令交互图，本实施例针对方式4来进行说明。如图9所示，包括如下步骤：
步骤901、UE与eNB进行数据传输。
步骤902、在一定时间后，UE确定当前没有继续需要传输的数据。
步骤903、UE向eNB发送上下文信息保存请求。
或者也可以称为RRC挂起请求，以请求进行UE的上下文信息的保存。
上述步骤902和903为可选步骤，因此图中用虚线标示。
步骤904、eNB确定进行UE的上下文信息的保存，并保存UE的上下文信息。
或者等价地称之为RRC连接的挂起。具体地，eNB可以是在收到UE发送的上下文信息保存请求时，确定可以进行UE的上下文信息的保存。或者，eNB也可以是根据与UE之间进行数据传输的情况，确定UE已经在一定时间内没有传输数据时，自主确定可以进行UE的上下文信息的保存(或者等价地称之为RRC连接的挂起)。
步骤905、eNB向MME发送UE的上下文信息保存指示消息。
或者称为上下文信息保存请求消息，或者称为RRC连接挂起请求消息，或者称为RRC连接挂起指示消息，以通知MME该UE将处于上下文信息保存状态或者称为RRC连接挂起状态。
步骤906、MME向SGW发送UE承载挂起指示消息。
该指示消息用于指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
MME收到eNB发送的UE上下文信息保存指示消息后，确定UE将处于上下文信息保存状态或者RRC连接挂起状态。然后向SGW发送指示消息，以指示SGW所述UE的承载将处于挂起状态，或者暂停传输数据的状态。
步骤907、S-GW向MME发送承载挂起确认消息。
步骤908、MME向eNB发送连接挂起确认消息。
步骤909、eNB向UE发送上下文信息保存指示消息。
或者等价地称之为RRC连接挂起指示消息，RRC连接释放指示消息，该上下文信息保存指示消息中携带上下文信息保存指示信息，以命令UE保存UE的上下文信息。
步骤910、UE保存上下文信息。
步骤911、UE确定执行小区选择或重选过程。
小区选择或重选过程可以参考前述相关实施例执行。
步骤912、UE确定存在待传输数据。
具体地，UE在执行完小区选择或重选后，即经过小区选择或重选后选择到了一个小区后，不马上触发后续的RRC连接建立过程，而是待下列触发条件的至少一项满足时，UE才触发后续的RRC连接建立过程：
UE上行数据到达或者UE有上行数据需要发送；
UE接收到eNB发送的数据传输通知消息，例如寻呼消息；
UE确定有新的上行和/或下行数据需要传输时，触发执行向eNB的后续RRC连接建立过程。
步骤913、UE向eNB发送随机接入消息(preamble)。
步骤914、eNB向UE发送随机接入响应消息。
随机接入响应消息包含上行定时提前信息和上行资源分配信息。
步骤915、UE根据上行定时提前信息调整上行发送定时，并利用分配的上行资源分配信息获取上行传输资源。
步骤916、UE向eNB发送RRC连接建立请求。
在RRC连接建立请求消息中携带UE的标识信息S-TMSI。
步骤917、eNB向UE发送RRC连接建立消息。
其中，eNB接收到UE发送的RRC连接建立请求后，根据UE的S-TMSI确定UE的上下文信息是否有效。当确定UE的上下文信息在eNB有效时，eNB向UE发送RRC连接建立消息，所述RRC连接建立消息中携带指示UE利用保存的上下文信息恢复数据传输的恢复指示信息。
步骤918、UE确定向eNB发送RRC连接建立完成消息。
RRC连接建立完成消息中携带有short MAC-I，该short MAC-I是UE利用UE的标识信息，例如C-RNTI或S-TMSI，计算获得MAC-I后，截取MAC-I的低位16bit获得的。
步骤919、eNB向UE发送数据传输指示消息。
数据传输指示消息中包括安全密钥信息，例如nextHopChainingCount等。
步骤920、UE根据安全密钥信息更新中间密钥KeNB，并基于新的中间密钥KeNB和完整性保护算法生成KRRCinc以及根据加密算法生成KRRCenc和KUPenc，将各密钥激活。
步骤921、UE根据KUPenc对待传输数据加密后传输给eNB。
UE还可以利用新产生的加密和完整性保护密钥KRRCinc以及KRRCenc对后续的RRC控制消息进行加密和完整性保护后发送。
以上图6、图7、图8、图9所示的实施例，通过重用目前LTE协议中的RLF等事件以及RRC连接重建立过程，能够快速恢复数据传输，降低UE的实现复杂性。
图10为本发明实施例提供的数据传输处理方法实施例六的流程图，本实施例从基站eNB角度进行描述，如图10所示，包括如下步骤：
步骤1001、eNB确定用户设备是否在预设时间内没有进行数据传输，在所述用户设备在预设时间内没有进行数据传输时，执行步骤1002。
eNB确定UE是否一定时间内没有传输数据的方式，可以参照图1所示实施例中，比如接收到UE的上下文信息保存请求时确定，或者根据与UE的传输记录确定。
步骤1002、eNB向UE发送上下文信息保存指示信息和定时器配置信息。
UE根据该指示信息保存上下文信息，并确定UE处于与RRC连接重建立或RRC连接建立的触发相关的状态，并在存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程。
UE根据定时器配置信息进行相应的定时器配置和启动。
具体地实现方式参考前述各实施例，不再赘述。
步骤1003、eNB接收UE发送的RRC连接建立请求，RRC连接建立请求中包括UE的标识信息，UE的标识信息包括S-TMSI。
步骤1004、eNB在根据MME预先发送的所述S-TMSI确定所述上下文信息有效时，向UE发送RRC连接建立消息。
本实施例中，仅针对RRC连接建立过程进行从eNB侧的说明。eNB接收到UE发送的携带有S-TMSI的RRC连接建立请求后，首先基于从MME接收到的该UE的S-TMSI，对本地是否存储了该UE的上下文信息，即UE的上下文信息是否有效进行判定。判定有效时，向UE发送RRC连接建立消息，RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示UE利用保存的所述上下文信息恢复数据传输。
图11为本发明实施例提供的用户设备实施例一的结构示意图，如图11所示，该用户设备包括：接收保存模块11、确定模块12、重建处理模块13。
接收保存模块11，用于接收基站发送的上下文信息保存指示信息，并根据所述上下文信息保存指示信息保存用户设备的上下文信息。
确定模块12，用于确定所述用户设备处于与无线资源控制RRC连接重 建立或RRC连接建立的触发相关的状态。
重建处理模块13，用于在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，以通过保存的所述上下文信息和重建立或建立的RRC连接传输所述待传输数据。
可选的，该用户设备还包括：发送模块14。
发送模块14，用于在确定第一预设时间内没有需要进行传输的数据时，向所述基站发送上下文信息保存请求，以使所述基站保存所述上下文信息。
其中，所述上下文信息保存指示信息是所述基站根据所述上下文信息保存请求发送的，或者，是所述基站根据与所述用户设备的数据传输记录，在确定在第二预设时间内没有与所述用户设备间进行数据传输时发送的，所述第二预设时间等于或不等于所述第一预设时间。
可选的，所述确定模块12包括：第一确定子模块121。
第一确定子模块121，用于确定所述用户设备处于无线链路失败RLF状态。
可选的，所述确定模块12包括：第二确定子模块122、第三确定子模块123。
第二确定子模块122，用于确定所述用户设备处于与所述基站的定时同步状态。
第三确定子模块123，用于在所述用户设备存在所述待传输数据时，确定所述用户设备处于RLF状态。
可选的，所述确定模块12包括：第四确定子模块124。
第四确定子模块124，用于确定所述用户设备处于RRC连接重建立初始化状态，并根据所述RRC连接重建立初始化状态执行小区选择或重选过程。
可选的，所述确定模块12包括：第五确定子模块125。
第五确定子模块125，用于确定所述用户设备处于RRC连接建立初始化状态，并根据所述RRC连接建立初始化状态执行小区选择或重选过程，或者确定所述用户设备处于小区选择或重选的过程。
可选的，所述重建处理模块13包括：判断子模块1301、发送子模块1302、选择子模块1303。
判断子模块1301，用于判断所述用户设备当前的服务小区是否满足预设通信要求。
发送子模块1302，用于若所述当前的服务小区满足预设通信要求，则向所述基站发送RRC连接重建立请求或RRC连接建立请求。
选择子模块1303，用于若所述当前的服务小区不满足预设通信要求，则执行小区选择或重选过程。
所述发送子模块1302，还用于在选择出的小区对应的基站为所述基站时，向所述基站发送RRC连接重建立请求或RRC连接建立请求。
可选的，所述发送子模块1302还用于：
在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接重建立请求。
可选的，所述发送子模块1302还用于：
在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接建立请求。
上述图11所示实施例中各种可选的实现方式可以用于执行图1、图6-图9中用户设备UE的相关技术方案，其实现原理和技术效果类似，在此不再赘述。
图12为本发明实施例提供的用户设备实施例二的结构示意图，如图12所示，所述重建处理模块13，包括：计时控制子模块1304。
计时控制子模块1304，用于启动第一定时器，并在所述第一定时器超时后，释放所述上下文信息。
可选的，所述选择子模块1303，用于在所述第一定时器对应的时间段内执行小区选择或重选过程，并选择出一个小区。
所述计时控制子模块1304，用于若在所述第一定时器对应的时间段内没有选择出一个小区，则释放所述上下文信息。
可选的，所述选择子模块1303具体用于：
启动第二定时器，在所述第二定时器对应的第i个时间段内，若选择到第一小区，则暂停或停止所述第二定时器；
在暂停或停止所述第二定时器后，若所述第一小区不再是合适的小区， 则重置并重启所述第二定时器，在第i+1～n个时间段内，以选择第二小区，其中，i取1到n中的整数，n为大于1的整数。
可选的，所述选择子模块1303还用于：
执行小区选择或重选过程，若选择出的小区对应的基站与发送所述上下文信息保存指示信息的基站不同，或者，选择出的小区的改变次数大于或等于预设次数，则在所述用户设备存在所述待传输数据时，确定触发初始的RRC连接建立过程。
可选的，选择子模块1303还用于：
执行小区选择或重选过程，当确定选择出的小区的跟踪域发生改变时，触发执行位置更新过程，并在位置更新过程中与新的基站建立数据无线承载。
所述接收保存模块11还用于：
在位置更新过程中或位置更新完成后，接收所述新的基站发送的上下文信息保存指示信息。
上述图12所示实施例中的用户设备可以用于执行图2、以及图6至图9中用户设备UE的相关技术方案，其实现原理和技术效果类似，在此不再赘述。
图13为本发明实施例提供的用户设备实施例三的结构示意图，如图13所示，可选的，所述重建处理模块13包括：第一获取子模块1305。
第一获取子模块1305，用于获取上行定时提前信息和/或上行传输资源。
所述发送子模块1302，用于根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接重建立请求，所述RRC连接重建立请求中包括所述用户设备的标识信息、短的消息完整性鉴权码short MAC-I和重建原因指示信息中的至少一种，所述重建原因指示信息用于指示所述用户设备通过保存的上下文信息恢复数据传输。
可选的，所述重建处理模块13还包括：接收子模块1306、配置子模块1307。
接收子模块1306，用于接收所述基站发送的RRC连接重建立消息，所述连接重建立消息中包括无线资源配置信息和安全密钥信息。
配置子模块1307，用于根据所述无线资源配置信息进行相应的资源配置，并确定恢复数据无线承载DRB。
所述发送子模块1302，还用于向所述基站发送根据所述安全密钥信息加密的RRC连接重建立完成消息，所述RRC连接重建立完成消息中包括所述待传输数据。
可选的，所述计时控制子模块1304还用于：
在确定所述用户设备处于RRC连接重建立初始化状态的情况下，在所述用户设备存在所述待传输数据时或者在所述用户设备向所述基站发送RRC连接重建立请求时，启动第三定时器，并停止所述第一定时器和/或所述第二定时器。
可选的，所述计时控制子模块1304还用于：
若在所述第三定时器对应的时间段内，所述接收子模块收到所述RRC连接重建立消息，则停止所述第三定时器的计时；
若在所述第三定时器对应的时间段内，所述接收子模块未收到所述RRC连接重建立消息，则执行下列操作中的一项或多项：
进入RRC空闲态；
停止所述第一定时器；
触发向所述选择出的小区对应的基站发送发送RRC连接建立请求；
触发执行小区选择或重选，并向选择的小区对应的基站发送RRC连接建立请求。
具体的，所述第一获取子模块1305，包括：判断单元、第一获取单元、第二获取单元。
其中，判断单元，用于判断当前的覆盖等级是否发生改变。
第一获取单元，用于在所述覆盖等级发生改变时：
向所述基站发送随机接入请求；
接收所述基站发送的随机接入响应消息，所述随机接入响应消息中包括所述上行定时提前信息和用于获取所述上行传输资源的上行资源分配信息。
第二获取单元，用于在所述覆盖等级没有发生改变时：
获取当前本地保存的上行定时提前信息作为所述上行定时提前信息；
通过如下方式中的任一种获取所述上行传输资源：
向所述基站发送调度请求资源，以获取所述上行传输资源；
通过竞争上行共享信道资源，获取所述上行传输资源；
获取所述基站预先为所述用户设备配置的资源作为所述上行传输资源。
其中，所述判断单元用于：
根据无线资源管理RRM的测量结果的变化量是否超过预设阈值，判断当前的覆盖等级是否发生改变。
上述图13所示实施例中各种可选的实现方式可以用于执行图3至图4以及图6至图8中用户设备的相关技术方案，其实现原理和技术效果类似，在此不再赘述。
图14为本发明实施例提供的用户设备实施例四的结构示意图，如图14所示，所述重建处理模块13，包括：
第二获取子模块1310，用于获取上行定时提前信息和/或上行传输资源。
所述发送子模块1302，还用于根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息。
可选的，所述接收子模块1306还用于：
接收所述基站发送的RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输。
所述发送子模块1302还用于：向所述基站发送RRC连接建立完成消息。
具体地，所述发送子模块1302，还用于向所述基站发送RRC连接建立完成消息，所述RRC连接建立完成消息中包括根据所述用户设备的标识信息计算得到的short MAC-I。
可选的，所述重建处理模块13还包括：第三获取子模块1311。
第三获取子模块1311，用于获取安全密钥。
所述发送子模块1302，还用于根据所述安全密钥对所述RRC连接建立完成消息加密和/或完整性保护后发送。
可选的，所述发送子模块1302，还用于根据所述安全密钥对所述RRC连接建立请求进行加密和/或完整性保护后发送。
其中，所述第三获取子模块1311具体用于：
获取所述上下文信息中的安全密钥，所述安全密钥包括消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc和数据加密密钥KUPenc。
进一步的，所述接收子模块1306，还用于接收所述基站发送的安全密钥指示信息，所述安全密钥指示信息中包括安全密钥更新信息。
相应的，所述重建处理模块13还包括：更新子模块1312、计算子模块1313。
更新子模块1312，用于根据所述安全密钥更新信息更新中间密钥KeNB。
计算子模块1313，用于根据更新后的中间密钥KeNB和完整性保护算法生成消息完整性保护密钥KRRCinc，根据更新后的中间密钥KeNB和加密算法生成消息加密密钥KRRCenc和数据加密密钥KUPenc。
其中，所述安全密钥指示信息携带在如下任一种消息中：密钥更新指示消息、数据传输指示消息、RRC连接建立消息、携带所述UE上下文保存指示信息的消息。
具体的，所述第二获取子模块1310，包括：判断单元、第一获取单元、第二获取单元。
判断单元，用于判断当前的覆盖等级是否发生改变。
第一获取单元，用于在所述覆盖等级发生改变时：
向所述基站发送随机接入请求；
接收所述基站发送的随机接入响应消息，所述随机接入响应消息中包括所述上行定时提前信息和用于获取所述上行传输资源的上行资源分配信息。
第二获取单元，用于在所述覆盖等级没有发生改变时：
获取当前本地保存的上行定时提前信息作为所述上行定时提前信息；
通过如下方式中的任一种获取所述上行传输资源：
向所述基站发送调度请求资源，以获取所述上行传输资源；
通过竞争上行共享信道资源，获取所述上行传输资源；
获取所述基站预先为所述用户设备配置的资源作为所述上行传输资源。
具体的，所述判断单元用于：
根据无线资源管理RRM的测量结果的变化量是否超过预设阈值，判断当前的覆盖等级是否发生改变。
上述图14所示实施例中各种可选的实现方式可以用于执行图5以及图9中用户设备的相关技术方案，其实现原理和技术效果类似，在此不再赘述。
图15为本发明实施例提供的用户设备实施例五的结构示意图，如图16所示，所述用户设备包括：接收器21、处理器22、发送器23。
接收器21，用于接收基站发送的上下文信息保存指示信息，并根据所述上下文信息保存指示信息保存用户设备的上下文信息。
处理器22，用于确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态。
所述处理器22，还用于在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，以通过保存的所述上下文信息和重建立或建立的RRC连接传输所述待传输数据。
可选的，所述处理器22，还用于确定所述用户设备处于无线链路失败RLF状态。
可选的，所述处理器22，还用于确定所述用户设备处于与所述基站的定时同步状态；
在所述用户设备存在所述待传输数据时，确定所述用户设备处于RLF状态。
可选的，所述处理器22，还用于确定所述用户设备处于RRC连接重建立初始化状态，并根据所述RRC连接重建立初始化状态执行小区选择或重选过程。
可选的，所述处理器22，还用于确定所述用户设备处于RRC连接建立 初始化状态，并根据所述RRC连接建立初始化状态执行小区选择或重选过程，或者确定所述用户设备处于小区选择或重选的过程。
可选的，所述处理器22，还用于判断所述用户设备当前的服务小区是否满足预设通信要求。
该用户设备还包括：发送器23。
发送器23，用于若所述当前的服务小区满足预设通信要求，则向所述基站发送RRC连接重建立请求或RRC连接建立请求；
所述处理器22，还用于若所述当前的服务小区不满足预设通信要求，则执行小区选择或重选过程。
所述发送器23，还用于在选择出的小区对应的基站为所述基站时，向所述基站发送RRC连接重建立请求或RRC连接建立请求。
可选的，所述发送器23还用于：
在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接重建立请求。
可选的，所述发送器23还用于：在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接建立请求。
进一步地，所述处理器22还用于：启动第一定时器，并在所述第一定时器超时后，释放所述上下文信息。
进一步地，所述处理器22，还用于在所述第一定时器对应的时间段内执行小区选择或重选过程，选择出一小区；若在所述第一定时器对应的时间段内没有选择出一个小区来进行RRC连接建立或重建，则释放所述上下文信息。
进一步地，所述处理器22，还用于：
启动第二定时器，在所述第二定时器对应的第i个时间段内，若选择到第一小区，则暂停或停止所述第二定时器；
在暂停或停止所述第二定时器后，若所述第一小区不再是合适的小区，则重置并重启所述第二定时器，在第i+1～n个时间段内，以选择第二小区，其中，i取1到n中的整数，n为大于1的整数。
进一步地，所述处理器22还用于：
获取上行定时提前信息和/或上行传输资源。
所述发送器23还用于：根据所述上行定时提前信息调整上行发送定 时，和/或采用所述上行传输资源向所述基站发送RRC连接重建立请求，所述RRC连接重建立请求中包括所述用户设备的标识信息、短的消息完整性鉴权码short MAC-I和重建原因指示信息中的至少一种，所述重建原因指示信息用于指示所述用户设备通过保存的上下文信息恢复数据传输。
进一步地，所述接收器21，还用于接收所述基站发送的RRC连接重建立消息，所述连接重建立消息中包括无线资源配置信息和安全密钥信息。
所述处理器22，还用于根据所述无线资源配置信息进行相应的资源配置，并确定恢复数据无线承载DRB。
进一步地，所述发送器23，还用于向所述基站发送根据所述安全密钥信息加密的RRC连接重建立完成消息，所述RRC连接重建立完成消息中包括所述待传输数据。
所述发送器23，还用于向所述基站发送根据所述安全密钥信息加密的RRC连接重建立完成消息，所述RRC连接重建立完成消息中包括所述待传输数据。
进一步地，所述处理器22还用于：
在确定所述用户设备处于RRC连接重建立初始化状态的情况下，在所述用户设备存在所述待传输数据时或者在所述用户设备向所述基站发送RRC连接重建立请求时，启动第三定时器，并停止所述第一定时器和/或所述第二定时器。
进一步地，所述处理器22还用于：
若在所述第三定时器对应的时间段内，所述接收子模块收到所述RRC连接重建立消息，则停止所述第三定时器的计时；
若在所述第三定时器对应的时间段内，所述接收子模块未收到所述RRC连接重建立消息，则执行下列操作中的一项或多项：
进入RRC空闲态；
停止所述第一定时器；
触发向所述选择出的小区对应的基站发送发送RRC连接建立请求；
触发执行小区选择或重选，并向选择出的小区对应的基站发送RRC连接建立请求。
进一步地，所述处理器22还用于：
获取上行定时提前信息和/或上行传输资源。
所述发送器23，还用于根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息。
进一步地，所述接收器21还用于：
接收所述基站发送的RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输。
所述发送器23还用于：向所述基站发送RRC连接建立完成消息。
进一步地，所述发送器23，还用于向所述基站发送RRC连接建立完成消息，所述RRC连接建立完成消息中包括根据所述用户设备的标识信息计算得到的short MAC-I。
所述处理器22还用于：获取安全密钥。
所述发送器23，还用于根据所述安全密钥对所述RRC连接建立完成消息加密和/或完整性保护后发送。
进一步地，所述发送器23，还用于根据所述安全密钥对所述RRC连接建立请求进行加密和/或完整性保护后发送。
进一步地，所述处理器22还用于：获取所述上下文信息中的安全密钥，所述安全密钥包括消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc和数据加密密钥KUPenc。
所述接收器21，还用于接收所述基站发送的安全密钥指示信息，所述安全密钥指示信息中包括安全密钥更新信息。
所述处理器22还用于：
根据所述安全密钥更新信息更新中间密钥KeNB；
根据更新后的中间密钥KeNB和完整性保护算法生成消息完整性保护密钥KRRCinc，根据更新后的中间密钥KeNB和加密算法生成消息加密密钥KRRCenc和数据加密密钥KUPenc；
其中，所述安全密钥指示信息携带在如下任一种消息中：密钥更新指示消息、数据传输指示消息、RRC连接建立消息、携带所述UE上下文保 存指示信息的消息。
进一步地于，所述处理器22还用于：
判断当前的覆盖等级是否发生改变。
所述发送器23，还用于在所述覆盖等级发生改变时：向所述基站发送随机接入请求。
所述接收器21，还用于接收所述基站发送的随机接入响应消息，所述随机接入响应消息中包括所述上行定时提前信息和用于获取所述上行传输资源的上行资源分配信息。
所述发送器23还用于在所述覆盖等级没有发生改变时：获取当前本地保存的上行定时提前信息作为所述上行定时提前信息。
所述处理器22还用于通过如下方式中的任一种获取所述上行传输资源：
向所述基站发送调度请求资源，以获取所述上行传输资源；
通过竞争上行共享信道资源，获取所述上行传输资源；
获取所述基站预先为所述用户设备配置的资源作为所述上行传输资源。
进一步地，所述处理器22还用于：
根据无线资源管理RRM的测量结果的变化量是否超过预设阈值，判断当前的覆盖等级是否发生改变。
所述发送器23，还用于在确定第一预设时间内没有需要进行传输的数据时，向所述基站发送上下文信息保存请求，以使所述基站保存所述上下文信息。
具体地，所述上下文信息保存指示信息是所述基站根据所述上下文信息保存请求发送的，或者，是所述基站根据与所述用户设备的数据传输记录，在确定在第二预设时间内没有与所述用户设备间进行数据传输时发送的，所述第二预设时间等于或不等于所述第一预设时间。
进一步地，所述接收器21，还用于接收所述基站发送的第四定时器配置信息，所述第四定时器用于计时所述上下文信息中的安全密钥的有效期。
具体地，所述上下文信息保存指示信息包含于以下指示消息中的任一种 中：
上下文信息保存指示消息、RRC连接挂起指示消息、RRC连接释放指示消息。
进一步地，所述处理器22还用于：
执行小区选择或重选过程，若选择出的小区对应的基站与发送所述上下文信息保存指示信息的基站不同，或者，选择出的小区的改变次数大于或等于预设次数，则在所述用户设备存在所述待传输数据时，确定触发初始的RRC连接建立过程。
进一步地，所述处理器22还用于：执行小区选择或重选过程，当确定选择出的小区的跟踪域发生改变时，触发执行位置更新过程，并在位置更新过程中与新的基站建立数据无线承载。
进一步地，所述接收器21还用于：在位置更新过程中或位置更新完成后，接收所述新的基站发送的上下文信息保存指示信息。
本实施例提供的用户设备，用于执行以上各实施例中用户设备的技术方案，其实现原理和技术效果类似，不再赘述。
图16为本发明实施例提供的基站实施例一的结构示意图，如图16所示，包括：确定模块31、发送模块32。
确定模块31，用于确定用户设备是否在预设时间内没有进行数据传输。
发送模块32，用于在所述确定模块确定所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送上下文信息保存指示信息，以使所述用户设备保存上下文信息，并确定所述用户设备处于与RRC连接重建立或RRC连接建立的触发相关的状态，并在存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程。
可选的，所述发送模块32还用于：
在所述确定模块确定所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送定时器配置信息，所述定时器配置信息包括指示所述上下文信息中的安全密钥的有效期的定时器配置信息，以及指示所述上下文信息的有效期的定时器配置信息。
进一步地，所述基站还包括：接收模块33。
接收模块33，用于接收所述用户设备发送的RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息，所述用户设备的标识信息包括S-TMSI。
所述发送模块32，还用于在所述确定模块根据移动性管理实体MME预先发送的所述S-TMSI确定所述上下文信息有效时，向所述用户设备发送RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输。
本实施例提供的基站，用于执行以上图10所示实施例中的技术方案，其实现原理和技术效果类似，不再赘述。
图17为本发明实施例提供的基站实施例二的结构示意图，如图17所示，包括：
处理器41，用于确定用户设备是否在预设时间内没有进行数据传输。
发送器42，用于在所述确定模块确定所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送上下文信息保存指示信息，以使所述用户设备保存上下文信息，并确定所述用户设备处于与RRC连接重建立或RRC连接建立的触发相关的状态，并在存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程。
可选的，所述发送器42还用于：
在所述确定模块确定所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送定时器配置信息，所述定时器配置信息包括指示所述上下文信息中的安全密钥的有效期的定时器配置信息，以及指示所述上下文信息的有效期的定时器配置信息。
进一步地，所述基站还包括：
接收器43，用于接收所述用户设备发送的RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息，所述用户设备的标识信息包括S-TMSI。
所述发送器42，还用于在所述确定模块根据移动性管理实体MME预先发送的所述S-TMSI确定所述上下文信息有效时，向所述用户设备发送RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输。
本实施例提供的基站，用于执行以上图10所示实施例中的技术方案，其实现原理和技术效果类似，不再赘述。
在上述用户设备、基站的实施例中，应理解，该处理器可以是中央处理单元(英文：Central Processing Unit，简称：CPU)，还可以是其他通用处理器、数字信号处理器(英文：Digital Signal Processor，简称：DSP)、专用集成电路(英文：Application Specific Integrated Circuit，简称：ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储介质包括：只读存储器(英文：read-only memory，缩写：ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文：magnetic tape)、软盘(英文：floppy disk)、光盘(英文：optical disc)及其任意组合。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (40)

  1. 一种数据传输处理方法，用于基站所服务的用户设备，其特征在于，包括：
    接收所述基站发送的上下文信息保存指示信息，并根据所述上下文信息保存指示信息保存所述用户设备的上下文信息；
    确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态；
    在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，并通过保存的所述上下文信息在重建的RRC连接或建立的RRC连接传输所述待传输数据。
  2. 根据权利要求1所述的方法，其特征在于，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态，包括：
    确定所述用户设备处于无线链路失败RLF状态。
  3. 根据权利要求1所述的方法，其特征在于，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态，包括：
    确定所述用户设备处于与所述基站的定时同步状态；
    在所述用户设备存在所述待传输数据时，确定所述用户设备处于RLF状态。
  4. 根据权利要求1所述的方法，其特征在于，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态，包括：
    确定所述用户设备处于RRC连接重建立初始化状态，并根据所述RRC连接重建立初始化状态执行小区选择或重选过程。
  5. 根据权利要求1所述的方法，其特征在于，所述确定所述用户设备处于与无线资源控制RRC连接重建立或RRC连接建立的触发相关的状态，包括：
    确定所述用户设备处于RRC连接建立初始化状态，并根据所述RRC连接建立初始化状态执行小区选择或重选过程，或者确定所述用户设备处于小区选择或重选的过程。
  6. 根据权利要求2或3所述的方法，其特征在于，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，包括：
    判断所述用户设备当前的服务小区是否满足预设通信要求；
    若所述当前的服务小区满足预设通信要求，则在所述用户设备存在待传输数据时，通过当前服务小区向所述基站发送RRC连接重建立请求或RRC连接建立请求；
    若所述当前的服务小区不满足预设通信要求，则执行小区选择或重选过程，在选择出的小区对应的基站为所述基站，并且在所述用户设备存在待传输数据时，通过选择的小区向所述基站发送RRC连接重建立请求或RRC连接建立请求。
  7. 根据权利要求4所述的方法，其特征在于，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，包括：
    在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接重建立请求。
  8. 根据权利要求5所述的方法，其特征在于，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，包括：
    在所述用户设备存在所述待传输数据时，通过选择的小区向所述基站发送RRC连接建立请求。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程之前，还包括：
    启动第一定时器，并在所述第一定时器超时后，释放所述上下文信息。
  10. 根据权利要求9所述的方法，其特征在于，所述启动第一定时器，并在所述第一定时器超时后，释放所述上下文信息，包括：
    在所述第一定时器对应的时间段内执行小区选择或重选过程，并选择出一小区；
    若在所述第一定时器对应的时间段内没有选择出一小区，则释放所述上下文信息。
  11. 根据权利要求4至10中任一项所述的方法，其特征在于，所述执行小区选择或重选过程，包括：
    启动第二定时器，在所述第二定时器对应的第i个时间段内，若选择到第一小区，则暂停或停止所述第二定时器；
    在暂停或停止所述第二定时器后，若所述第一小区不再是合适的小区，则重置并重启所述第二定时器，在第i+1～n个时间段内，以选择第二小区，其中，i取1到n中的整数，n为大于1的整数。
  12. 根据权利要求1至11中任一项所述的方法，其特征在于，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，包括：
    获取上行定时提前信息和/或上行传输资源；
    根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接重建立请求，所述RRC连接重建立请求中包括所述用户设备的标识信息、短的消息完整性鉴权码short MAC-I和重建原因指示信息中的至少一种，所述重建原因指示信息用于指示所述用户设备通过保存的上下文信息恢复数据传输。
  13. 根据权利要求12所述的方法，其特征在于，所述方法还包括：
    接收所述基站发送的RRC连接重建立消息，所述连接重建立消息中包括无线资源配置信息和安全密钥信息；
    根据所述无线资源配置信息进行相应的资源配置，并确定恢复数据无线承载DRB。
  14. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    向所述基站发送根据所述安全密钥信息加密的RRC连接重建立完成消息，所述RRC连接重建立完成消息中包括所述待传输数据。
  15. 根据权利要求4至14中任一项所述的方法，其特征在于，所述方法还包括：
    在确定所述用户设备处于RRC连接重建立初始化状态的情况下，在所述用户设备存在所述待传输数据时或者在所述用户设备向所述基站发送RRC连接重建立请求时，启动第三定时器，并停止所述第一定时器和/或所述第二定时器。
  16. 根据权利要求15所述的方法，其特征在于，所述方法还包括：
    若在所述第三定时器对应的时间段内，收到所述RRC连接重建立消 息，则停止所述第三定时器的计时；
    若在所述第三定时器对应的时间段内，未收到所述RRC连接重建立消息，则执行下列操作中的一项或多项：
    进入RRC空闲态；
    停止所述第一定时器；
    触发向所述选择出的小区对应的基站发送发送RRC连接建立请求；
    触发执行小区选择或重选，并向选择出的小区对应的基站发送RRC连接建立请求。
  17. 根据权利要求1至11中任一项所述的方法，其特征在于，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接建立过程，包括：
    获取上行定时提前信息和/或上行传输资源；
    根据所述上行定时提前信息调整上行发送定时，和/或采用所述上行传输资源向所述基站发送RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息。
  18. 根据权利要求17所述的方法，其特征在于，所述方法还包括：
    接收所述基站发送的RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输；
    向所述基站发送RRC连接建立完成消息。
  19. 根据权利要求18所述的方法，其特征在于，所述向所述基站发送RRC连接建立完成消息，包括：
    向所述基站发送RRC连接建立完成消息，所述RRC连接建立完成消息中包括根据所述用户设备的标识信息计算得到的short MAC-I；
    和/或，
    获取安全密钥；
    根据所述安全密钥对所述RRC连接建立完成消息进行加密和/或完整性保护后发送。
  20. 根据权利要求17所述的方法，其特征在于，所述向所述基站发送RRC连接建立请求，包括：
    获取安全密钥；
    根据所述安全密钥对所述RRC连接建立请求进行加密和/或完整性保护后发送。
  21. 根据权利要求19或20所述的方法，其特征在于，所述获取安全密钥，包括：
    获取所述上下文信息中的安全密钥，所述安全密钥包括消息完整性保护密钥KRRCinc、消息加密密钥KRRCenc和数据加密密钥KUPenc；
    或者，
    所述获取安全密钥，包括：
    接收所述基站发送的安全密钥指示信息，所述安全密钥指示信息中包括安全密钥更新信息；
    根据所述安全密钥更新信息更新中间密钥KeNB，根据更新后的中间密钥KeNB和完整性保护算法生成消息完整性保护密钥KRRCinc，根据更新后的中间密钥KeNB和加密算法生成消息加密密钥KRRCenc和数据加密密钥KUPenc；
    其中，所述安全密钥指示信息携带在如下任一种消息中：密钥更新指示消息、数据传输指示消息、RRC连接建立消息、携带所述UE上下文保存指示信息的消息。
  22. 根据权利要求12或17所述的方法，其特征在于，所述获取上行定时提前信息和/或上行传输资源，包括：
    判断当前的覆盖等级是否发生改变；
    在所述覆盖等级发生改变时：
    向所述基站发送随机接入请求；
    接收所述基站发送的随机接入响应消息，所述随机接入响应消息中包括所述上行定时提前信息和用于获取所述上行传输资源的上行资源分配信息。
  23. 根据权利要求22所述的方法，其特征在于，所述方法还包括：在所述覆盖等级没有发生改变时：
    获取当前本地保存的上行定时提前信息作为所述上行定时提前信息；
    通过如下方式中的任一种获取所述上行传输资源：
    向所述基站发送调度请求资源，以获取所述上行传输资源；
    通过竞争上行共享信道资源，获取所述上行传输资源；
    获取所述基站预先为所述用户设备配置的资源作为所述上行传输资源。
  24. 根据权利要求1至23中任一项所述的方法，其特征在于，所述方法还包括：
    在确定第一预设时间内没有需要进行传输的数据时，向所述基站发送上下文信息保存请求，以使所述基站保存所述上下文信息。
  25. 根据权利要求1至24中任一项所述的方法，其特征在于，所述上下文信息保存指示信息是所述基站根据所述上下文信息保存请求发送的，或者，是所述基站根据与所述用户设备的数据传输记录，在确定在第二预设时间内没有与所述用户设备间进行数据传输时发送的，所述第二预设时间等于或不等于所述第一预设时间。
  26. 根据权利要求1至25中任一项所述的方法，其特征在于，还包括：
    接收所述基站发送的第四定时器的配置信息，所述第四定时器用于计时所述上下文信息中的安全密钥的有效期；
    在接收到所述上下文信息保存指示信息时启动所述第四定时器。
  27. 根据权利要求1至26中任一项所述的方法，其特征在于，所述上下文信息保存指示信息包含于以下指示消息中的任一种中：
    上下文信息保存指示消息、RRC连接挂起指示消息、RRC连接释放指示消息。
  28. 根据权利要求1至27中任一项所述的方法，其特征在于，所述在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程之前，还包括：
    执行小区选择或重选过程，若选择出的小区的基站与发送所述上下文信息保存指示信息的基站不同，或者，选择出的小区的改变次数大于或等于预设次数，则在所述用户设备存在所述待传输数据时，确定触发初始的RRC连接建立过程。
  29. 根据权利要求1至28中任一项所述的方法，其特征在于，所述在所 述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程之前，还包括：
    执行小区选择或重选过程，当确定选择出的小区的跟踪域发生改变时，触发执行位置更新过程，并在位置更新过程中与新的基站建立数据无线承载。
  30. 根据权利要求29所述的方法，其特征在于，所述方法还包括：
    在位置更新过程中或位置更新完成后，接收所述新的基站发送的上下文信息保存指示信息。
  31. 一种数据传输处理方法，其特征在于，包括：
    确定用户设备是否在预设时间内没有进行数据传输；
    在所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送上下文信息保存指示信息，以使所述用户设备保存上下文信息，并确定所述用户设备处于与RRC连接重建立或RRC连接建立的触发相关的状态，并在存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程。
  32. 根据权利要求31所述的方法，其特征在于，所述方法还包括：
    在所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送定时器配置信息，所述定时器配置信息包括指示所述上下文信息中的安全密钥的有效期的定时器配置信息，以及指示所述上下文信息的有效期的定时器配置信息。
  33. 根据权利要求31所述的方法，其特征在于，所述方法还包括：
    接收所述用户设备发送的RRC连接建立请求，所述RRC连接建立请求中包括所述用户设备的标识信息，所述用户设备的标识信息包括S-TMSI；
    在根据移动性管理实体MME预先发送的所述S-TMSI确定所述上下文信息有效时，向所述用户设备发送RRC连接建立消息，所述RRC连接建立消息中包括恢复指示信息，所述恢复指示信息用于指示所述用户设备利用保存的所述上下文信息恢复数据传输。
  34. 一种用户设备，其特征在于，包括：
    接收器，用于接收基站发送的上下文信息保存指示信息，并根据所述上下文信息保存指示信息保存用户设备的上下文信息；
    处理器，用于确定所述用户设备处于与无线资源控制RRC连接重建立或 RRC连接建立的触发相关的状态；
    所述处理器，还用于在所述用户设备存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程，以通过保存的所述上下文信息和重建立或建立的RRC连接传输所述待传输数据。
  35. 根据权利要求34所述的用户设备，其特征在于，所述处理器，还用于确定所述用户设备处于无线链路失败RLF状态。
  36. 根据权利要求34所述的用户设备，其特征在于，所述处理器，还用于确定所述用户设备处于与所述基站的定时同步状态；
    在所述用户设备存在所述待传输数据时，确定所述用户设备处于RLF状态。
  37. 根据权利要求34所述的用户设备，其特征在于，所述处理器，还用于确定所述用户设备处于RRC连接重建立初始化状态，并根据所述RRC连接重建立初始化状态执行小区选择或重选过程。
  38. 根据权利要求34所述的用户设备，其特征在于，所述处理器，还用于确定所述用户设备处于RRC连接建立初始化状态，并根据所述RRC连接建立初始化状态执行小区选择或重选过程，或者确定所述用户设备处于小区选择或重选的过程。
  39. 根据权利要求35至38中任一项所述的用户设备，其特征在于，所述处理器，还用于判断所述用户设备当前的服务小区是否满足预设通信要求；
    所述用户设备还包括：
    发送器，用于若所述当前的服务小区满足预设通信要求，则向所述基站发送RRC连接重建立请求或RRC连接建立请求；
    所述处理器，还用于若所述当前的服务小区不满足预设通信要求，则执行小区选择或重选过程；
    所述发送器，还用于在选择出的小区对应的基站为所述基站时，向所述基站发送RRC连接重建立请求或RRC连接建立请求。
  40. 一种基站，其特征在于，包括：
    处理器，用于确定用户设备是否在预设时间内没有进行数据传输；
    发送器，用于在所述确定模块确定所述用户设备在预设时间内没有进行数据传输时，向所述用户设备发送上下文信息保存指示信息，以使所述用户设 备保存上下文信息，并确定所述用户设备处于与RRC连接重建立或RRC连接建立的触发相关的状态，并在存在上行和/或下行的待传输数据时，触发RRC连接重建立过程或RRC连接建立过程。
PCT/CN2015/098332 2015-12-22 2015-12-22 数据传输处理方法、用户设备和基站 WO2017107073A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201580085389.7A CN108370601A (zh) 2015-12-22 2015-12-22 数据传输处理方法、用户设备和基站
PCT/CN2015/098332 WO2017107073A1 (zh) 2015-12-22 2015-12-22 数据传输处理方法、用户设备和基站
EP15911072.5A EP3383125A4 (en) 2015-12-22 2015-12-22 Data transmission processing method, user equipment and base station
US16/015,759 US20180302944A1 (en) 2015-12-22 2018-06-22 Data Transmission Processing Method, User Equipment, and Base Station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/098332 WO2017107073A1 (zh) 2015-12-22 2015-12-22 数据传输处理方法、用户设备和基站

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/015,759 Continuation US20180302944A1 (en) 2015-12-22 2018-06-22 Data Transmission Processing Method, User Equipment, and Base Station

Publications (1)

Publication Number Publication Date
WO2017107073A1 true WO2017107073A1 (zh) 2017-06-29

Family

ID=59088642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/098332 WO2017107073A1 (zh) 2015-12-22 2015-12-22 数据传输处理方法、用户设备和基站

Country Status (4)

Country Link
US (1) US20180302944A1 (zh)
EP (1) EP3383125A4 (zh)
CN (1) CN108370601A (zh)
WO (1) WO2017107073A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312296A (zh) * 2018-03-27 2019-10-08 夏普株式会社 用户设备执行的方法、基站执行的方法、用户设备和基站
CN110351894A (zh) * 2018-04-04 2019-10-18 北京三星通信技术研究有限公司 一种认证ue的方法和设备
CN110636561A (zh) * 2018-06-21 2019-12-31 中兴通讯股份有限公司 信息传输方法及装置、存储介质、电子装置
WO2022032453A1 (zh) * 2020-08-10 2022-02-17 Oppo广东移动通信有限公司 寻呼优化方法和网络设备
WO2022147671A1 (zh) * 2021-01-06 2022-07-14 华为技术有限公司 一种通信方法和装置

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10779260B2 (en) * 2016-02-02 2020-09-15 Lg Electronics Inc. Method and apparatus for paging with resume ID for suspended user equipment in wireless communication system
CN111866819B (zh) * 2016-02-05 2022-09-13 中兴通讯股份有限公司 终端与网络间连接处理方法和装置
WO2017134630A1 (en) * 2016-02-05 2017-08-10 Telefonaktiebolaget Lm Ericsson (Publ) System and method for flexible user equipment identification
US10764797B2 (en) * 2016-04-19 2020-09-01 Lg Electronics Inc. Method for handling failure of handover procedure in wireless communication system and apparatus therefor
US11206538B2 (en) * 2016-09-30 2021-12-21 Huawei Technologies Co., Ltd. Control signaling processing method, device, and system
AU2017397009B2 (en) * 2017-02-03 2021-04-29 Telefonaktiebolaget Lm Ericsson (Publ) Radio resource control resume without context fetch
US10581495B2 (en) * 2017-08-18 2020-03-03 Nokia Technologies Oy Physical layer configuration continuity during radio resource control restoration
RU2748679C1 (ru) 2018-04-16 2021-05-28 Телефонактиеболагет Лм Эрикссон (Пабл) Обработка безопасности для возобновления rrc из неактивного состояния
CN111132332A (zh) * 2018-10-31 2020-05-08 华硕电脑股份有限公司 使用预配置上行链路资源进行传送的方法和设备
CN111757555B (zh) * 2019-03-29 2023-01-13 大唐移动通信设备有限公司 一种连接处理方法及设备
CN111641975B (zh) * 2020-05-12 2023-07-21 Oppo广东移动通信有限公司 无线连接重建方法及装置、终端、存储介质
CN114126091A (zh) * 2020-08-26 2022-03-01 大唐移动通信设备有限公司 上行数据处理方法、装置、网络设备、终端设备及介质
CN114286395A (zh) * 2020-09-27 2022-04-05 中国电信股份有限公司 基站通信方法、基站、通信系统和存储介质
CN115589643A (zh) * 2021-07-06 2023-01-10 华为技术有限公司 数据处理方法及装置
CN115694599A (zh) * 2021-07-31 2023-02-03 华为技术有限公司 一种传输方法、系统及相关装置
CN115734388A (zh) * 2021-08-30 2023-03-03 华为技术有限公司 通信方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101827428A (zh) * 2010-04-22 2010-09-08 新邮通信设备有限公司 减小无线链路失败时数据丢失的方法及中继
CN102045713A (zh) * 2009-10-15 2011-05-04 中兴通讯股份有限公司 业务连接重建的方法和实现系统
CN103313420A (zh) * 2012-03-15 2013-09-18 中兴通讯股份有限公司 一种释放终端链路的方法、接入网装置及终端
CN103687055A (zh) * 2012-09-25 2014-03-26 中兴通讯股份有限公司 一种承载分配和管理的方法及设备
EP2880958A2 (en) * 2012-08-02 2015-06-10 Telefonaktiebolaget LM Ericsson (PUBL) Method and apparatus for reducing signaling in a core network

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1978770A1 (en) * 2007-04-05 2008-10-08 Matsushita Electric Industrial Co., Ltd. Management of mobile terminals in a communication system allowing for multiple-tracking area registration
CN101217814B (zh) * 2008-01-11 2011-03-23 展讯通信（上海）有限公司 一种改善移动终端发起呼叫成功率的方法
KR101622219B1 (ko) * 2008-11-03 2016-05-18 엘지전자 주식회사 무선 통신 시스템에서 ｒｒｃ 연결을 재설정하는 방법 및 이를 위한 장치
US20100173610A1 (en) * 2009-01-05 2010-07-08 Qualcomm Incorporated Access stratum security configuration for inter-cell handover
CN101945384B (zh) * 2009-07-09 2013-06-12 中兴通讯股份有限公司 Rrc连接重建立时的安全密钥处理方法、装置及系统
WO2012138079A2 (ko) * 2011-04-03 2012-10-11 엘지전자 주식회사 신호 전송 여부 결정 방법
EP2557889B1 (en) * 2011-08-12 2019-07-17 BlackBerry Limited Simplified ue + enb messaging
US9247575B2 (en) * 2012-03-27 2016-01-26 Blackberry Limited eNB storing RRC configuration information at another network component
EP2645803B1 (en) * 2012-03-27 2019-07-31 BlackBerry Limited Enb storing rrc configuration information at another network component
JP5835485B2 (ja) * 2012-07-18 2015-12-24 日本電気株式会社 無線基地局、移動通信システム、ハンドオーバ制御方法およびプログラム
CN114449603A (zh) * 2012-12-24 2022-05-06 北京三星通信技术研究有限公司 无线通信系统中的基站及由其执行的方法
CN103534970B (zh) * 2013-05-17 2017-09-08 华为技术有限公司 系统信息块传输方法和装置
CN104219787A (zh) * 2014-09-10 2014-12-17 电信科学技术研究院 一种恢复无线链路的方法和设备
US10667321B2 (en) * 2015-02-09 2020-05-26 Intel IP Corporation Evolved Node-B, user equipment, and methods for transition between idle and connected modes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102045713A (zh) * 2009-10-15 2011-05-04 中兴通讯股份有限公司 业务连接重建的方法和实现系统
CN101827428A (zh) * 2010-04-22 2010-09-08 新邮通信设备有限公司 减小无线链路失败时数据丢失的方法及中继
CN103313420A (zh) * 2012-03-15 2013-09-18 中兴通讯股份有限公司 一种释放终端链路的方法、接入网装置及终端
EP2880958A2 (en) * 2012-08-02 2015-06-10 Telefonaktiebolaget LM Ericsson (PUBL) Method and apparatus for reducing signaling in a core network
CN103687055A (zh) * 2012-09-25 2014-03-26 中兴通讯股份有限公司 一种承载分配和管理的方法及设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3383125A4 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312296A (zh) * 2018-03-27 2019-10-08 夏普株式会社 用户设备执行的方法、基站执行的方法、用户设备和基站
CN110312296B (zh) * 2018-03-27 2023-09-08 夏普株式会社 用户设备执行的方法、基站执行的方法、用户设备和基站
CN110351894A (zh) * 2018-04-04 2019-10-18 北京三星通信技术研究有限公司 一种认证ue的方法和设备
CN110636561A (zh) * 2018-06-21 2019-12-31 中兴通讯股份有限公司 信息传输方法及装置、存储介质、电子装置
CN110636561B (zh) * 2018-06-21 2022-11-08 中兴通讯股份有限公司 信息传输方法及装置、存储介质、电子装置
WO2022032453A1 (zh) * 2020-08-10 2022-02-17 Oppo广东移动通信有限公司 寻呼优化方法和网络设备
WO2022147671A1 (zh) * 2021-01-06 2022-07-14 华为技术有限公司 一种通信方法和装置

Also Published As

Publication number Publication date
CN108370601A (zh) 2018-08-03
US20180302944A1 (en) 2018-10-18
EP3383125A1 (en) 2018-10-03
EP3383125A4 (en) 2019-01-02

Similar Documents

Publication Publication Date Title
WO2017107073A1 (zh) 数据传输处理方法、用户设备和基站
EP3780759B1 (en) Method executed by user equipment and user equipment
EP2922363B1 (en) Dual Connectivity Network
TWI405479B (zh) 處理無線承載恢復的方法及其無線通訊裝置與系統
US11627625B2 (en) UE behavior with rejection of resume request
BR112020009790A2 (pt) método de acesso à rede, dispositivo terminal, e dispositivo de rede
EP3337286B1 (en) Method and apparatus for releasing radio resource control (rrc) connection
WO2018019001A1 (zh) 一种终端状态转换方法及装置
TWI542242B (zh) 演進節點Ｂ（ｅＮＢ）於另一網路組件儲存無線電資源控制（ＲＲＣ）組態資訊
RU2765430C1 (ru) Способ и пользовательское оборудование для создания соединения, избегающие ненужных действий
US20160165572A1 (en) Method of transmission scheme switch, ue and base station
EP3402284B1 (en) Method and device for monitoring radio resource control flow
US20180020456A1 (en) Data Transmission Method, Access Network Device, and Communication System
WO2015168937A1 (zh) 资源选择装置和通信系统
WO2022127731A1 (zh) 小区变更方法以及用户设备
WO2018133607A1 (zh) 一种数据传输的方法、装置及系统
WO2021092102A1 (en) Conditional full configuration and conditional delta configuration
EP3994953A1 (en) Nas recovery in a wireless communication network
CN111886885A (zh) 恢复rrc连接时的安全验证
WO2014201925A1 (zh) 长期演进业务和集群业务并发时重建立方法、基站和用户设备
WO2022127730A1 (zh) 由用户设备执行的方法以及用户设备
KR101802646B1 (ko) 무선 통신 시스템의 기지국에서 수행되는 단말의 액세스 관리 방법 및 장치
WO2013152643A1 (zh) 无线承载配置方法及装置
WO2014117369A1 (zh) 通信方法、配置信息处理方法及其装置、通信系统
CN117461350A (zh) 通信的方法、装置和计算机存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15911072

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2015911072

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2015911072

Country of ref document: EP

Effective date: 20180628